The following table contains brief descriptions of all metadata information that is relevant to the processing of Single-exposure (level 1) images and the extraction of sources from the corresponding Single-exposure images. The table contains the unique scan ID for a specific scan frame and the reconstructed right ascension and declination of the level 1b frame center. Much of the information in this table is processing-specific, and may not be of interest to general users (e.g. flags indicating whether frames have been processed or not, and the date and time for starting of the pipeline, etc.). The metadata table also contains some characterization and derived statistics of the Single-expsoure image frames, basic photometric parameters used for photometry and derived statistics for extracted sources and artifacts. For example, it contains median pixel values of the coadded sky coverage map, the number of sources with profile-fit photometry Signal-to-Noise (SNR) greater than 3, and the total number of real sources affected by artifacts such as electronic ghosts, etc.
The columns in the following table are:
| Column Name | Format | Units | nulls | Description | |
|---|---|---|---|---|---|
| scan_id | %6s | ---- | no | Scan identifier. This is a six character string that identifies a block of
survey exposures that are acquired between two flight system maneuvers,
such as reorientation of the instrument boresight near the ecliptic poles,
or slews to acquire TDRSS for data downlink contacts. Because
maneuvers often take place near the ecliptic poles, the scan number
is roughly associated with a half-orbit's worth of images. However,
scans can cover less or more than half of the arc between ecliptic poles.
The scan_id has the general form SSSSSx, where
The first scan whose data are used in the Preliminary Data Release is scan 07101b. This was the second scan after the SEP crossing in the 3550th WISE orbit. The final scan included in the Release is 08744a, the first scan after the NEP crossing in the 4372nd WISE orbit. |
|
| frame_num | %3d | ---- | no | Number of the frameset on which this source was extracted. The
identifier has the general form MMM, a zero-filled
three-digit number.
The frameset number is computed based on time bins which count from the scan start time: where
For example, a frame with a start time 1234 secs after the scan start time would have a frame number of 124. N.B.
|
|
| date_proc | %20s | datetimeZ | no | The date and time of the start of WISE pipeline processing in Coordinated Universal Time (UTC). For example, scan 07200a, frameset number 165 was processed starting at 2011-10-22 21:14:06. | |
| elapsed_t | %7.2f | sec | no | The elapsed processing time from the start of the WISE pipeline processing, in units of seconds. This is wall clock time. | |
| ucpu_t | %7.2f | sec | no | User CPU time for pipeline processing, in seconds. | |
| scpu_t | %6.2f | sec | no | System CPU time for pipeline processing, in seconds. | |
| ra0 | %10.6f | deg | no | Right ascension (J2000) of the raw image frame (level 0) center. | |
| dec0 | %10.6f | deg | no | Declination (J2000) of the raw image frame (level 0) center. | |
| crota0 | %17.12f | deg | no | Image twist of the raw image (level 0): the position of the image y-axis West of North at the EQUINOX; in the opposite direction of the conventional Position Angle, where position angle (P.A.) = -CROTA0. | |
| rssrate | %17.14f | arcmin/s | no | The root square sum of the three telescope axes spacecraft scan rates. | |
| moon_sep | %7.3f | deg | no | The angular distance from the frame center to the Moon. | |
| saa_sep | %7.3f | deg | no | The angular distance from the frame center to South Atlantic Anomaly (SAA) boundary. Negative values indicate the frame center is inside the boundary. | |
| ra | %10.6f | deg | no | The right ascension (J2000) of the position-reconstructed Single-expsoure frame (level 1b) center with respect to the 2MASS PSC reference frame. | |
| dec | %10.6f | deg | no | The declination (J2000) of the position-reconstructed Single-exposure frame (level 1b) center with respect to the 2MASS PSC reference frame. | |
| crota | %17.12f | deg | no | Image twist of the position-reconstructed, Single-exposure frame (level 1b): the position of the image y-axis West of North at the EQUINOX; in the opposite direction of the conventional Position Angle, where position angle (P.A.) = -CROTA. | |
| bandbits | %2d | ---- | no | Bit-wise flag that indicates which bands have been processed, starting at band 1 = bit 0. When three bands have been processed, the value is 7. | |
| w1bandrun | %1d | ---- | no | This flag indicates whether band 1 has been processed; 1 means yes and 0 means no. | |
| w2bandrun | %1d | ---- | no | This flag indicates whether band 2 has been processed; 1 means yes and 0 means no. | |
| w3bandrun | %1d | ---- | no | This flag indicates whether band 3 has been processed; 1 means yes and 0 means no. | |
| date_obs | %24s | datetimeZ | no | The date and time of the mid-point of the frameset exposure, in UTC. The mid-point is defined as the time the optical boresight crosses the center of the WISE focal planes. This time is the same for all bands, whereas the exposure times in W1 and W2 are different than in W3. | |
| mjd | %12.6f | day | yes | The Modified Julian Date of the mid-point of the frameset exposure. The mid-point is defined as the time the optical boresight crosses the center of the WISE focal planes. This time is the same for all bands, whereas the exposure times in W1 and W2 are different than in W3. | |
| wsds_vsn | %20s | ---- | no | The version number of the WISE pipeline used for this current data release. | |
| date_dbprep | %20s | datetimeZ | no | The date and time when the data was prepared by the WISE archive software DBPREP for the archive loading, in UTC. | |
| draf | %10.3f | arcsec | no | The true-angular difference in RA between the band-frame centers before and after position reconstruction, for the lowest band processed. | |
| ddecf | %10.3f | arcsec | no | The angular difference in declination between the band-frame centers before and after position reconstruction, for the lowest band processed. | |
| dpaf | %12.3f | arcsec | no | The difference in the frame position angle before and after position reconstruction, for the lowest band processed. | |
| sigraf | %11.6f | arcsec | no | The final band-frame sigma on RA for the lowest band processed. | |
| sigdcf | %11.6f | arcsec | no | The final band-frame sigma on declination for the lowest band processed. | |
| sigpaf | %9.3f | arcsec | no | The final band-frame sigma on PA for lowest band processed. | |
| qflgsf | %14s | ---- | no | The single-frame positional reconstruction quality flag. | |
| band_prex | %1d | ---- | no | The lowest band processed by the Single-frame positional reconstruction pipeline (SFPREX). This band is used for calculating draf, ddecf, dpaf, sigraf, sigdcf, and sigpaf. | |
| dra_frame | %10.3f | arcsec | no | The right ascension difference (RA) between the level 0 and refined level 1 frame centers. | |
| ddec_frame | %10.3f | arcsec | no | The declination difference (DEC) between the level 0 and the refined level 1 frame centers. | |
| dpa_frame | %11.3f | arcsec | no | The position angle difference between the level 0 and the refined level 1 frame centers. | |
| moon_masked | %4s | ---- | no | The 4-character flag (0/1), one character per band, which indicates whether the frame is within the moon-mask area in each band. | |
| w1msknumtotbad | %7d | ---- | yes | The number of pixels in the single-exposure image that were tagged in the frame mask with a non-zero value for band 1. Not all conditions under which pixels were tagged are fatal. | |
| w2msknumtotbad | %7d | ---- | yes | The number of pixels in the single-exposure image that were tagged in the frame mask with a non-zero value for band 2. Not all conditions under which pixels were tagged are fatal. | |
| w3msknumtotbad | %7d | ---- | yes | The number of pixels in the single-exposure image that were tagged in the frame mask with a non-zero value for band 3. Not all conditions under which pixels were tagged are fatal. | |
| w1msknumdynabad | %7d | ---- | yes | The number of dynamically masked bad-pixel transients in the single-exposure image for band 1. See section IV.4.a.viii.3. | |
| w2msknumdynabad | %7d | ---- | yes | The number of dynamically masked bad-pixel transients in the single-exposure image for band 2. See section IV.4.a.viii.3. | |
| w3msknumdynabad | %7d | ---- | yes | The number of dynamically masked bad-pixel transients in the single-exposure image for band 3. See section IV.4.a.viii.3. | |
| w1msknumsat | %7d | ---- | yes | The number of pixels in the single-exposure image that saturated at any sample-up-the-ramp read for band 1. | |
| w2msknumsat | %7d | ---- | yes | The number of pixels in the single-exposure image that saturated at any sample-up-the-ramp read for band 2. | |
| w3msknumsat | %7d | ---- | yes | The number of pixels in the single-exposure image that saturated at any sample-up-the-ramp read for band 3. | |
| w1intnspikelo | %7d | ---- | yes | The number of low valued "pixel-spike" outliers falling in the low-tail of the frame-pixel distribution for band 1. These are defined as spatial outliers, i.e., with respect to other neighboring pixels. | |
| w2intnspikelo | %7d | ---- | yes | The number of low valued "pixel-spike" outliers falling in the low-tail of the frame-pixel distribution for band 2. These are defined as spatial outliers, i.e., with respect to other neighboring pixels. | |
| w3intnspikelo | %7d | ---- | yes | The number of low valued "pixel-spike" outliers falling in the low-tail of the frame-pixel distribution for band 3. These are defined as spatial outliers, i.e., with respect to other neighboring pixels. | |
| w1intnspikehi | %7d | ---- | yes | The number of high valued "pixel-spike" outliers falling in the high-tail of the frame-pixel distribution for band 1. These are defined as spatial outliers, i.e., with respect to other neighboring pixels. | |
| w2intnspikehi | %7d | ---- | yes | The number of high valued "pixel-spike" outliers falling in the high-tail of the frame-pixel distribution for band 2. These are defined as spatial outliers, i.e., with respect to other neighboring pixels. | |
| w3intnspikehi | %7d | ---- | yes | The number of high valued "pixel-spike" outliers falling in the high-tail of the frame-pixel distribution for band 3. These are defined as spatial outliers, i.e., with respect to other neighboring pixels. | |
| w1intmean | %15.6f | DN | yes | The mean pixel value in the intensity image of the single-exposure frame for band 1. | |
| w2intmean | %15.6f | DN | yes | The mean pixel value in the intensity image of the single-exposure frame for band 2. | |
| w3intmean | %15.6f | DN | yes | The mean pixel value in the intensity image of the single-exposure frame for band 3. | |
| w1intmedian | %15.6f | DN | yes | The median pixel value in the intensity image of the single-exposure frame for band 1. | |
| w2intmedian | %15.6f | DN | yes | The median pixel value in the intensity image of the single-exposure frame for band 2. | |
| w3intmedian | %15.6f | DN | yes | The median pixel value in the intensity image of the single-exposure frame for band 3. | |
| w1intstddev | %15.6f | DN | yes | The standard deviation (RMS) from the mean (unbiased population estimate) for band 1. | |
| w2intstddev | %15.6f | DN | yes | The standard deviation (RMS) from the mean (unbiased population estimate), band 2. | |
| w3intstddev | %15.6f | DN | yes | The standard deviation (RMS) from the mean (unbiased population estimate), band 3. | |
| w1intsigltmadmed | %15.6f | DN | yes | The lower-tail median absolute deviation from the median (a robust estimate of sigma) for pixels in the intensity image of the single-exposure frame for band 1. | |
| w2intsigltmadmed | %15.6f | DN | yes | The lower-tail median absolute deviation from the median (a robust estimate of sigma) for pixels in the intensity image of the single-exposure frame for band 2. | |
| w3intsigltmadmed | %15.6f | DN | yes | The lower-tail median absolute deviation from the median (a robust estimate of sigma) for pixels in the intensity image of the single-exposure frame for band 3. | |
| w1inti16_84range | %15.6f | DN | yes | A more robust estimate of the full (single-exposure) image sigma for band 1 based on half the percentile difference: 0.5*(84th - 16th), where percentiles are computed from pixels in the intensity image. | |
| w2inti16_84range | %15.6f | DN | yes | A more robust estimate of the full (single-exposure) image sigma for band 2 based on half the percentile difference: 0.5*(84th - 16th), where percentiles are computed from pixels in the intensity image. | |
| w3inti16_84range | %15.6f | DN | yes | A more robust estimate of the full (single-exposure) image sigma for band 3 based on half the percentile difference: 0.5*(84th - 16th), where percentiles are computed from pixels in the intensity image. | |
| w1intmed16ptile | %15.6f | DN | yes | A robust estimate of sigma using the difference of the 50th - 16th percentile values for pixels in the intensity image of the single-exposure image for band 1. | |
| w2intmed16ptile | %15.6f | DN | yes | A robust estimate of sigma using the difference of the 50th - 16th percentile values for pixels in the intensity image of the single-exposure image for band 2. | |
| w3intmed16ptile | %15.6f | DN | yes | A robust estimate of sigma using the difference of the 50th - 16th percentile values for pixels in the intensity image of the single-exposure image for band 3. | |
| w1intratmedrange | %15.6f | ---- | yes | The ratio of (84th percentile - median) / (median - 16th percentile) for pixels in the intensity image of the single-exposure frame for band 1. | |
| w2intratmedrange | %15.6f | ---- | yes | The ratio of (84th percentile - median) / (median - 16th percentile) for pixels in the intensity image of the single-exposure frame for band 2. | |
| w3intratmedrange | %15.6f | ---- | yes | The ratio of (84th percentile - median) / (median - 16th percentile) for pixels in the intensity image of the single-exposure frame for band 3. | |
| w1unclocscal2 | %15.6f | ---- | yes | The ratio of the local RMS in intensity pixel fluctuations using the lower-tail deviation from the mode to the modal pixel uncertainty from the model, for band 1. It is a pseudo-χ2 measure that is robust against the presence of sources and bright, extended structure. | |
| w2unclocscal2 | %15.6f | ---- | yes | The ratio of the local RMS in intensity pixel fluctuations using the lower-tail deviation from the mode to the modal pixel uncertainty from the model, for band 2. It is a pseudo-χ2 measure that is robust against the presence of sources and bright, extended structure. | |
| w3unclocscal2 | %15.6f | ---- | yes | The ratio of the local RMS in intensity pixel fluctuations using the lower-tail deviation from the mode to the modal pixel uncertainty from the model, for band 3. It is a pseudo-χ2 measure that is robust against the presence of sources and bright, extended structure. | |
| naxis | %2d | ---- | no | Number of data axes; it is always '2' for two-dimensional images. | |
| w1naxis1 | %4d | ---- | yes | Length of data axis 1 or number of columns in the band 1 image. | |
| w1naxis2 | %4d | ---- | yes | Length of data axis 2 or number of rows in the band 1 image. | |
| w2naxis1 | %4d | ---- | yes | Length of data axis 1 or number of columns in the band 2 image. | |
| w2naxis2 | %4d | ---- | yes | Length of data axis 2 or number of rows in the band 2 image. | |
| w3naxis1 | %4d | ---- | yes | Length of data axis 1 or number of columns in the band 3 image. | |
| w3naxis2 | %4d | ---- | yes | Length of data axis 2 or number of rows in the band 3 image. | |
| w1crpix1 | %6.1f | ---- | yes | Axis 1 reference pixel at position crval1,crval2: 0.5*(w1naxis1+1), for band 1. | |
| w1crpix2 | %6.1f | ---- | yes | Axis 2 reference pixel at position crval1,crval2: 0.5*(w1naxis2+1), for band 1. | |
| w2crpix1 | %6.1f | ---- | yes | Axis 1 reference pixel at position crval1,crval2: 0.5*(w2naxis1+1), for band 2. | |
| w2crpix2 | %6.1f | ---- | yes | Axis 2 reference pixel at position crval1,crval2: 0.5*(w2naxis2+1), for band 2. | |
| w3crpix1 | %6.1f | ---- | yes | Axis 1 reference pixel at position crval1,crval2: 0.5*(w3naxis1+1), for band 3. | |
| w3crpix2 | %6.1f | ---- | yes | Axis 2 reference pixel at position crval1,crval2: 0.5*(w3naxis2+1), for band 3. | |
| w1crval1 | %16.12f | deg | yes | The reference Right Ascension (J2000) position at the image center (crpix1, crpix2) for EQUINOX, for band 1. | |
| w1crval2 | %16.12f | deg | yes | The reference Declination (J2000) position at the image center (crpix1, crpix2) for EQUINOX, for band 1. | |
| w1crder1 | %20.14e | deg | yes | The uncertainty value in crval1 (RA), band 1. | |
| w1crder2 | %20.14e | deg | yes | The uncertainty value in crval2 (DEC), band 1. | |
| w1csdradec | %21.14e | deg | yes | The costandard deviation in crval1 and crval2 (RA and Dec) for band 1, the square root of the absolute value of the covariance between RA and Dec with the sign of the covariance re-attached to the square-root if it was originally negative. | |
| w2crval1 | %16.12f | deg | yes | The reference Right Ascension (J2000) position at the image center (crpix1, crpix2) for EQUINOX, for band 2. | |
| w2crval2 | %16.12f | deg | yes | The reference Declination (J2000) position at the image center (crpix1, crpix2) for EQUINOX, for band 2. | |
| w2crder1 | %20.14e | deg | yes | The uncertainty value in crval1 (RA) for band 2. | |
| w2crder2 | %20.14e | deg | yes | The uncertainty value in crval2 (DEC) for band 2. | |
| w2csdradec | %21.14e | deg | yes | The costandard deviation in crval1 and crval2 (RA and Dec) for band 2, the square root of the absolute value of the covariance between RA and Dec with the sign of the covariance re-attached to the square-root if it was originally negative. | |
| w3crval1 | %16.12f | deg | yes | The reference Right Ascension (J2000) position at the image center (crpix1, crpix2) for EQUINOX, for band 3. | |
| w3crval2 | %16.12f | deg | yes | The reference Declination (J2000) position at the image center (crpix1, crpix2) for EQUINOX, for band 3. | |
| w3crder1 | %20.14e | deg | yes | The uncertainty value in crval1 (RA) for band 3. | |
| w3crder2 | %20.14e | deg | yes | The uncertainty value in crval2 (DEC) for band 3. | |
| w3csdradec | %21.14e | deg | yes | The costandard deviation in crval1 and crval2 (RA and Dec) for band 3, the square root of the absolute value of the covariance between RA and Dec with the sign of the covariance re-attached to the square-root if it was originally negative. | |
| ctype1 | %13s | -- | no | Projection type for axis 1. It is always set to use the SIN (orthographic) projection; for the definition, see Calabretta & Greisen, 2002. | |
| ctype2 | %13s | -- | no | Projection type for axis 2. It is always set to use the SIN (orthographic) projection; for the definition, see Calabretta & Greisen, 2002. | |
| equinox | %6.1f | year | no | The equinox of the World Coordinate System (WCS). | |
| w1elon | %16.12f | deg | yes | Ecliptic longitude at the center of the image for band 1. | |
| w1elat | %16.12f | deg | yes | Ecliptic latitude at the center of the image for band 1. | |
| w1glon | %16.12f | deg | yes | Galactic longitude at the center of the image for band 1. | |
| w1glat | %16.12f | deg | yes | Galactic latitude at the center of the image for band 1. | |
| w2elon | %16.12f | deg | yes | Ecliptic longitude at the center of the image for band 2. | |
| w2elat | %16.12f | deg | yes | Ecliptic latitude at the center of the image for band 2. | |
| w2glon | %16.12f | deg | yes | Galactic longitude at the center of the image for band 2. | |
| w2glat | %16.12f | deg | yes | Galactic latitude at the center of the image for band 2. | |
| w3elon | %16.12f | deg | yes | Ecliptic longitude at the center of the image for band 3. | |
| w3elat | %16.12f | deg | yes | Ecliptic latitude at the center of the image for band 3. | |
| w3glon | %16.12f | deg | yes | Galactic longitude at the center of the image for band 3. | |
| w3glat | %16.12f | deg | yes | Galactic latitude at the center of the image for band 3. | |
| w1ra1 | %16.12f | deg | yes | Right Ascension (RA, J2000) at the image corner #1 (crpix1,crpix2 = -0.5,-0.5) for band 1. | |
| w1dec1 | %16.12f | deg | yes | Declination (DEC, J2000) at the image corner #1 (crpix1,crpix2 = -0.5,-0.5) for band 1. | |
| w1ra2 | %16.12f | deg | yes | Right Ascension (RA, J2000) at the image corner #2 (crpix1,crpix2 = naxis1+0.5,-0.5) for band 1. | |
| w1dec2 | %16.12f | deg | yes | Declination (DEC, J2000) at the image corner #2 (crpix1,crpix2 = naxis1+0.5,-0.5) for band 1. | |
| w1ra3 | %16.12f | deg | yes | Right Ascension (RA, J2000) at the image corner #3 (crpix1,crpix2 = naxis1+0.5,naxis2+0.5) for band 1. | |
| w1dec3 | %16.12f | deg | yes | Declination (DEC, J2000) at the image corner #3 (crpix1,crpix2 = naxis1+0.5,naxis2+0.5) for band 1. | |
| w1ra4 | %16.12f | deg | yes | Right Ascension (RA, J2000) at the image corner #4 (crpix1,crpix2 = -0.5,naxis2+0.5) for band 1. | |
| w1dec4 | %16.12f | deg | yes | Declination (DEC, J2000) at the image corner #4 (crpix1,crpix2 = -0.5,naxis2+0.5) for band 1. | |
| w2ra1 | %16.12f | deg | yes | Right Ascension (RA, J2000) at the image corner #1 (crpix1,crpix2 = -0.5,-0.5) for band 2. | |
| w2dec1 | %16.12f | deg | yes | Declination (DEC, J2000) at the image corner #1 (crpix1,crpix2 = -0.5,-0.5) for band 2. | |
| w2ra2 | %16.12f | deg | yes | Right Ascension (RA, J2000) at the image corner #2 (crpix1,crpix2 = naxis1+0.5,-0.5) for band 2. | |
| w2dec2 | %16.12f | deg | yes | Declination (DEC, J2000) at the image corner #2 (crpix1,crpix2 = naxis1+0.5,-0.5) for band 2. | |
| w2ra3 | %16.12f | deg | yes | Right Ascension (RA, J2000) at the image corner #3 (crpix1,crpix2 = naxis1+0.5,naxis2+0.5) for band 2. | |
| w2dec3 | %16.12f | deg | yes | Declination (DEC, J2000) at the image corner #3 (crpix1,crpix2 = naxis1+0.5,naxis2+0.5) for band 2. | |
| w2ra4 | %16.12f | deg | yes | Right Ascension (RA, J2000) at the image corner #4 (crpix1,crpix2 = -0.5,naxis2+0.5) for band 2. | |
| w2dec4 | %16.12f | deg | yes | Declination (DEC, J2000) at the image corner #4 (crpix1,crpix2 = -0.5,naxis2+0.5) for band 2. | |
| w3ra1 | %16.12f | deg | yes | Right Ascension (RA, J2000) at the image corner #1 (crpix1,crpix2 = -0.5,-0.5) for band 3. | |
| w3dec1 | %16.12f | deg | yes | Declination (DEC, J2000) at the image corner #1 (crpix1,crpix2 = -0.5,-0.5) for band 3. | |
| w3ra2 | %16.12f | deg | yes | Right Ascension (RA, J2000) at the image corner #2 (crpix1,crpix2 = naxis1+0.5,-0.5) for band 3. | |
| w3dec2 | %16.12f | deg | yes | Declination (DEC, J2000) at the image corner #2 (crpix1,crpix2 = naxis1+0.5,-0.5) for band 3. | |
| w3ra3 | %16.12f | deg | yes | Right Ascension (RA, J2000) at the image corner #3 (crpix1,crpix2 = naxis1+0.5,naxis2+0.5) for band 3. | |
| w3dec3 | %16.12f | deg | yes | Declination (DEC, J2000) at the image corner #3 (crpix1,crpix2 = naxis1+0.5,naxis2+0.5) for band 3. | |
| w3ra4 | %16.12f | deg | yes | Right Ascension (RA, J2000) at the image corner #4 (crpix1,crpix2 = -0.5,naxis2+0.5) for band 3. | |
| w3dec4 | %16.12f | deg | yes | Declination (DEC, J2000) at the image corner #4 (crpix1,crpix2 = -0.5,naxis2+0.5) for band 3. | |
| w1wcdelt1 | %21.18f | deg/pix | yes | Degree per pixel image scale at the reference position of the image (crpix1,crpix2) for axis 1 (x), band 1. See w1pxscal1 for the arcsec equivalent. | |
| w1wcdelt2 | %21.18f | deg/pix | yes | Degree per pixel image scale at the reference position of the image (crpix1,crpix2) for axis 2 (y), band 1. See w1pxscal2 for the arcsec equivalent. | |
| w1uncrts1 | %20.14e | deg/pix | yes | The uncertainty in the image scale w1wcdelt1 for band 1. | |
| w1uncrts2 | %20.14e | deg/pix | yes | The uncertainty in the image scale w1wcdelt2 for band 1. | |
| w1pxscal1 | %17.14f | arcsec/pix | yes | Arcsecond per pixel image scale at the reference position of the image (crpix1,crpix2) for axis 1 (x), band 1. See w1wcdelt1 for the degree equivalent. | |
| w1pxscal2 | %17.14f | arcsec/pix | yes | Arcsecond per pixel image scale at the reference position of the image (crpix1,crpix2) for axis 2 (y), band 1. See w1wcdelt2 for the degree equivalent. | |
| w2wcdelt1 | %21.18f | deg/pix | yes | Degree per pixel image scale at the reference position of the image (crpix1,crpix2) for axis 1 (x), band 2. See w2pxscal1 for the arcsec equivalent. | |
| w2wcdelt2 | %21.18f | deg/pix | yes | Degree per pixel image scale at the reference position of the image (crpix1,crpix2) for axis 2 (y), band 2. See w2pxscal2 for the arcsec equivalent. | |
| w2uncrts1 | %20.14e | deg/pix | yes | The uncertainty in the image scale w2wcdelt1 for band 2. | |
| w2uncrts2 | %20.14e | deg/pix | yes | The uncertainty in the image scale w2wcdelt2 for band 2. | |
| w2pxscal1 | %17.14f | arcsec/pix | yes | Arcsecond per pixel image scale at the reference position of the image (crpix1,crpix2) for axis 1 (x), band 2. See w2wcdelt1 for the degree equivalent. | |
| w2pxscal2 | %17.14f | arcsec/pix | yes | Arcsecond per pixel image scale at the reference position of the image (crpix1,crpix2) for axis 2 (y), band 2. See w2wcdelt2 for the degree equivalent. | |
| w3wcdelt1 | %21.18f | deg/pix | yes | Degree per pixel image scale at the reference position of the image (crpix1,crpix2) for axis 1 (x), band 3. See w3pxscal1 for the arcsec equivalent. | |
| w3wcdelt2 | %21.18f | deg/pix | yes | Degree per pixel image scale at the reference position of the image (crpix1,crpix2) for axis 2 (y), band 3. See w3pxscal2 for the arcsec equivalent. | |
| w3uncrts1 | %20.14e | deg/pix | yes | The uncertainty in the image scale w3wcdelt1 for band 3. | |
| w3uncrts2 | %20.14e | deg/pix | yes | The uncertainty in the image scale w3wcdelt2 for band 3. | |
| w3pxscal1 | %17.14f | arcsec/pix | yes | Arcsecond per pixel image scale at the reference position of the image (crpix1,crpix2) for axis 1 (x), band 3. See w3wcdelt1 for the degree equivalent. | |
| w3pxscal2 | %17.14f | arcsec/pix | yes | Arcsecond per pixel image scale at the reference position of the image (crpix1,crpix2) for axis 2 (y), band 3. See w3wcdelt2 for the degree equivalent. | |
| w1pa | %18.13f | deg | yes | The position angle of the positive image y-axis (axis2), East of North at the EQUINOX for band 1. | |
| w1uncrtpa | %21.18f | deg | yes | The uncertainty in the image position angle w1pa for band 1. | |
| w2pa | %18.13f | deg | yes | The position angle of the positive image y-axis (axis2), East of North at the EQUINOX for band 2. | |
| w2uncrtpa | %21.18f | deg | yes | The uncertainty in the image position angle w2pa for band 2. | |
| w3pa | %18.13f | deg | yes | The position angle of the positive image y-axis (axis2), East of North at the EQUINOX for band 3. | |
| w3uncrtpa | %21.18f | deg | yes | The uncertainty in the image position angle w3pa for band 3. | |
| w1skew | %5.1f | ---- | yes | The measurement of non-orthogonality of the image frame axes for band 1. | |
| w2skew | %5.1f | ---- | yes | The measurement of non-orthogonality of the image frame axes for band 2. | |
| w3skew | %5.1f | ---- | yes | The measurement of non-orthogonality of the image frame axes for band 3. | |
| w1cd1_1 | %21.18f | deg/pix | yes | CD (coordinate description) matrix element (1,1), encoding frame rotation and pixel scale for band 1. | |
| w1cd1_2 | %21.18f | deg/pix | yes | CD (coordinate description) matrix element (1,2), encoding frame rotation and pixel scale for band 1. | |
| w1cd2_1 | %21.18f | deg/pix | yes | CD (coordinate description) matrix element (2,1), encoding frame rotation and pixel scale for band 1. | |
| w1cd2_2 | %21.18f | deg/pix | yes | CD (coordinate description) matrix element (2,2), encoding frame rotation and pixel scale for band 1. | |
| w2cd1_1 | %21.18f | deg/pix | yes | CD (coordinate description) matrix element (1,1), encoding frame rotation and pixel scale for band 2. | |
| w2cd1_2 | %21.18f | deg/pix | yes | CD (coordinate description) matrix element (1,2), encoding frame rotation and pixel scale for band 2. | |
| w2cd2_1 | %21.18f | deg/pix | yes | CD (coordinate description) matrix element (2,1), encoding frame rotation and pixel scale for band 2. | |
| w2cd2_2 | %21.18f | deg/pix | yes | CD (coordinate description) matrix element (2,2), encoding frame rotation and pixel scale for band 2. | |
| w3cd1_1 | %21.18f | deg/pix | yes | CD (coordinate description) matrix element (1,1), encoding frame rotation and pixel scale for band 3. | |
| w3cd1_2 | %21.18f | deg/pix | yes | CD (coordinate description) matrix element (1,2), encoding frame rotation and pixel scale for band 3. | |
| w3cd2_1 | %21.18f | deg/pix | yes | CD (coordinate description) matrix element (2,1), encoding frame rotation and pixel scale for band 3. | |
| w3cd2_2 | %21.18f | deg/pix | yes | CD (coordinate description) matrix element (2,2), encoding frame rotation and pixel scale for band 3. | |
| bunit | %20s | ---- | no | Image pixel units: Data Number (DN) for intensity and uncertainty filetypes; the mask filetype is unitless. Image filetypes are described in section IV.4.a. | |
| w1modeint | %10.3f | DN | yes | The mode of the intensity pixel values within the partition with the lowest RMS in a 10 x 10 grid over the band 1 image. | |
| w2modeint | %10.3f | DN | yes | The mode of the intensity pixel values within the partition with the lowest RMS in a 10 x 10 grid over the band 2 image. | |
| w3modeint | %10.3f | DN | yes | The mode of the intensity pixel values within the partition with the lowest RMS in a 10 x 10 grid over the band 3 image. | |
| w1magzpunc | %9.6f | mag | yes | 1-sigma uncertainty in the photometric zero-point magnitude for the image, for band 1. | |
| w2magzpunc | %9.6f | mag | yes | 1-sigma uncertainty in the photometric zero-point magnitude for the image, for band 2. | |
| w3magzpunc | %9.6f | mag | yes | 1-sigma uncertainty in the photometric zero-point magnitude for the image, for band 3. | |
| unixt | %16.5f | sec | no | UNIX date-time in seconds of the mid-point of the frameset exposure, in UTC. The mid-point is defined as the time the optical boresight crosses the center of the WISE focal planes. This time is the same for all bands, whereas the exposure times in W1 and W2 are different than in W3. | |
| ephemt | %16.6f | sec | no | Ephemeris date-time in seconds of the mid-point of the frameset exposure, in UTC. The mid-point is defined as the time the optical boresight crosses the center of the WISE focal planes. This time is the same for all bands, whereas the exposure times in W1 and W2 are different than in W3. | |
| w1exptime | %4.1f | sec | yes | Single image frame exposure time in seconds for band 1; exposure times in W1 and W2 are different than in W3. | |
| w2exptime | %4.1f | sec | yes | Single image frame exposure time in seconds for band 2; exposure times in W1 and W2 are different than in W3. | |
| w3exptime | %4.1f | sec | yes | Single image frame exposure time in seconds for band 3; exposure times in W1 and W2 are different than in W3. | |
| tsamp | %4.1f | sec | no | The time interval between non-destructively read samples-up-the-ramp in on-board processing. | |
| w1l0file | %200s | ---- | yes | Corresponding level 0 image file name for band 1. | |
| w2l0file | %200s | ---- | yes | Corresponding level 0 image file name for band 2. | |
| w3l0file | %200s | ---- | yes | Corresponding level 0 image file name for band 3. | |
| dtanneal | %18.11f | sec | no | Elapsed time in seconds since the last anneal. | |
| utanneal | %24s | datetimeZ | no | The date and time of the last anneal, UTC. | |
| w1npn | %2d | ---- | yes | The number of different Point-Spread-Functions used in a grid over each image frame in band 1. These PSFs take into account the differences in distortion across the frames. | |
| w2npn | %2d | ---- | yes | The number of different Point-Spread-Functions used in a grid over each image frame in band 2. These PSFs take into account the differences in distortion across the frames. | |
| w3npn | %2d | ---- | yes | The number of different Point-Spread-Functions used in a grid over each image frame in band 3. These PSFs take into account the differences in distortion across the frames. | |
| nsrcall | %7d | ---- | no | The number of sources from the source detection subsystem loaded into the photometry subsystem for the frameset. | |
| w1zero | %7.3f | mag | no | The photometric zero point magnitude for the Single-exposure image for band 1. | |
| w2zero | %7.3f | mag | no | The photometric zero point magnitude for the Single-exposure image for band 2. | |
| w3zero | %7.3f | mag | no | The photometric zero point magnitude for the Single-exposure image for band 3. | |
| w1rap_1 | %6.3f | arcsec | yes | The radius of circular aperture 1, in arcseconds, used for aperture photometry in band 1. The WISE aperture photometry was performed with a set of 8 fixed circular apertures, with radii of 5.5, 8.25, 11.0, 13.75, 16.5, 19.25, 22.0, and 24.75 arcseconds in bands 1, 2, and 3. | |
| w2rap_1 | %6.3f | arcsec | yes | The radius of circular aperture 1, in arcseconds, used for aperture photometry in band 2. The WISE aperture photometry was performed with a set of 8 fixed circular apertures, with radii of 5.5, 8.25, 11.0, 13.75, 16.5, 19.25, 22.0, and 24.75 arcseconds in bands 1, 2, and 3. | |
| w3rap_1 | %6.3f | arcsec | yes | The radius of circular aperture 1, in arcseconds, used for aperture photometry in band 3. The WISE aperture photometry was performed with a set of 8 fixed circular apertures, with radii of 5.5, 8.25, 11.0, 13.75, 16.5, 19.25, 22.0, and 24.75 arcseconds in bands 1, 2, and 3. | |
| w1rap_2 | %6.3f | arcsec | yes | The radius of circular aperture 2, in arcseconds, used for aperture photometry in band 1. The WISE aperture photometry was performed with a set of 8 fixed circular apertures, with radii of 5.5, 8.25, 11.0, 13.75, 16.5, 19.25, 22.0, and 24.75 arcseconds in bands 1, 2, and 3. | |
| w2rap_2 | %6.3f | arcsec | yes | The radius of circular aperture 2, in arcseconds, used for aperture photometry in band 2. The WISE aperture photometry was performed with a set of 8 fixed circular apertures, with radii of 5.5, 8.25, 11.0, 13.75, 16.5, 19.25, 22.0, and 24.75 arcseconds in bands 1, 2, and 3. | |
| w3rap_2 | %6.3f | arcsec | yes | The radius of circular aperture 2, in arcseconds, used for aperture photometry in band 3. The WISE aperture photometry was performed with a set of 8 fixed circular apertures, with radii of 5.5, 8.25, 11.0, 13.75, 16.5, 19.25, 22.0, and 24.75 arcseconds in bands 1, 2, and 3. | |
| w1rap_3 | %6.3f | arcsec | yes | The radius of circular aperture 3, in arcseconds, used for aperture photometry in band 1. The WISE aperture photometry was performed with a set of 8 fixed circular apertures, with radii of 5.5, 8.25, 11.0, 13.75, 16.5, 19.25, 22.0, and 24.75 arcseconds in bands 1, 2, and 3. | |
| w2rap_3 | %6.3f | arcsec | yes | The radius of circular aperture 3, in arcseconds, used for aperture photometry in band 2. The WISE aperture photometry was performed with a set of 8 fixed circular apertures, with radii of 5.5, 8.25, 11.0, 13.75, 16.5, 19.25, 22.0, and 24.75 arcseconds in bands 1, 2, and 3. | |
| w3rap_3 | %6.3f | arcsec | yes | The radius of circular aperture 3, in arcseconds, used for aperture photometry in band 3. The WISE aperture photometry was performed with a set of 8 fixed circular apertures, with radii of 5.5, 8.25, 11.0, 13.75, 16.5, 19.25, 22.0, and 24.75 arcseconds in bands 1, 2, and 3. | |
| w1rap_4 | %6.3f | arcsec | yes | The radius of circular aperture 4, in arcseconds, used for aperture photometry in band 1. The WISE aperture photometry was performed with a set of 8 fixed circular apertures, with radii of 5.5, 8.25, 11.0, 13.75, 16.5, 19.25, 22.0, and 24.75 arcseconds in bands 1, 2, and 3. | |
| w2rap_4 | %6.3f | arcsec | yes | The radius of circular aperture 4, in arcseconds, used for aperture photometry in band 2. The WISE aperture photometry was performed with a set of 8 fixed circular apertures, with radii of 5.5, 8.25, 11.0, 13.75, 16.5, 19.25, 22.0, and 24.75 arcseconds in bands 1, 2, and 3. | |
| w3rap_4 | %6.3f | arcsec | yes | The radius of circular aperture 4, in arcseconds, used for aperture photometry in band 3. The WISE aperture photometry was performed with a set of 8 fixed circular apertures, with radii of 5.5, 8.25, 11.0, 13.75, 16.5, 19.25, 22.0, and 24.75 arcseconds in bands 1, 2, and 3. | |
| w1rap_5 | %6.3f | arcsec | yes | The radius of circular aperture 5, in arcseconds, used for aperture photometry in band 1. The WISE aperture photometry was performed with a set of 8 fixed circular apertures, with radii of 5.5, 8.25, 11.0, 13.75, 16.5, 19.25, 22.0, and 24.75 arcseconds in bands 1, 2, and 3. | |
| w2rap_5 | %6.3f | arcsec | yes | The radius of circular aperture 5, in arcseconds, used for aperture photometry in band 2. The WISE aperture photometry was performed with a set of 8 fixed circular apertures, with radii of 5.5, 8.25, 11.0, 13.75, 16.5, 19.25, 22.0, and 24.75 arcseconds in bands 1, 2, and 3. | |
| w3rap_5 | %6.3f | arcsec | yes | The radius of circular aperture 5, in arcseconds, used for aperture photometry in band 3. The WISE aperture photometry was performed with a set of 8 fixed circular apertures, with radii of 5.5, 8.25, 11.0, 13.75, 16.5, 19.25, 22.0, and 24.75 arcseconds in bands 1, 2, and 3. | |
| w1rap_6 | %6.3f | arcsec | yes | The radius of circular aperture 6, in arcseconds, used for aperture photometry in band 1. The WISE aperture photometry was performed with a set of 8 fixed circular apertures, with radii of 5.5, 8.25, 11.0, 13.75, 16.5, 19.25, 22.0, and 24.75 arcseconds in bands 1, 2, and 3. | |
| w2rap_6 | %6.3f | arcsec | yes | The radius of circular aperture 6, in arcseconds, used for aperture photometry in band 2. The WISE aperture photometry was performed with a set of 8 fixed circular apertures, with radii of 5.5, 8.25, 11.0, 13.75, 16.5, 19.25, 22.0, and 24.75 arcseconds in bands 1, 2, and 3. | |
| w3rap_6 | %6.3f | arcsec | yes | The radius of circular aperture 6, in arcseconds, used for aperture photometry in band 3. The WISE aperture photometry was performed with a set of 8 fixed circular apertures, with radii of 5.5, 8.25, 11.0, 13.75, 16.5, 19.25, 22.0, and 24.75 arcseconds in bands 1, 2, and 3. | |
| w1rap_7 | %6.3f | arcsec | yes | The radius of circular aperture 7, in arcseconds, used for aperture photometry in band 1. The WISE aperture photometry was performed with a set of 8 fixed circular apertures, with radii of 5.5, 8.25, 11.0, 13.75, 16.5, 19.25, 22.0, and 24.75 arcseconds in bands 1, 2, and 3. | |
| w2rap_7 | %6.3f | arcsec | yes | The radius of circular aperture 7, in arcseconds, used for aperture photometry in band 2. The WISE aperture photometry was performed with a set of 8 fixed circular apertures, with radii of 5.5, 8.25, 11.0, 13.75, 16.5, 19.25, 22.0, and 24.75 arcseconds in bands 1, 2, and 3. | |
| w3rap_7 | %6.3f | arcsec | yes | The radius of circular aperture 7, in arcseconds, used for aperture photometry in band 2. The WISE aperture photometry was performed with a set of 8 fixed circular apertures, with radii of 5.5, 8.25, 11.0, 13.75, 16.5, 19.25, 22.0, and 24.75 arcseconds in bands 1, 2, and 3. | |
| w1rap_8 | %6.3f | arcsec | yes | The radius of circular aperture 8, in arcseconds, used for aperture photometry in band 1. The WISE aperture photometry was performed with a set of 8 fixed circular apertures, with radii of 5.5, 8.25, 11.0, 13.75, 16.5, 19.25, 22.0, and 24.75 arcseconds in bands 1, 2, and 3. | |
| w2rap_8 | %6.3f | arcsec | yes | The radius of circular aperture 8, in arcseconds, used for aperture photometry in band 2. The WISE aperture photometry was performed with a set of 8 fixed circular apertures, with radii of 5.5, 8.25, 11.0, 13.75, 16.5, 19.25, 22.0, and 24.75 arcseconds in bands 1, 2, and 3. | |
| w3rap_8 | %6.3f | arcsec | yes | The radius of circular aperture 8, in arcseconds, used for aperture photometry in band 3. The WISE aperture photometry was performed with a set of 8 fixed circular apertures, with radii of 5.5, 8.25, 11.0, 13.75, 16.5, 19.25, 22.0, and 24.75 arcseconds in bands 1, 2, and 3. | |
| w1stap | %6.3f | arcsec | yes | The radius in arcseconds of the standard circular aperture used for aperture photometry in band 1, nominally 8.25 arcseconds. | |
| w2stap | %6.3f | arcsec | yes | The radius in arcseconds of the standard circular aperture used for aperture photometry in band 2, nominally 8.25 arcseconds. | |
| w3stap | %6.3f | arcsec | yes | The radius in arcseconds of the standard circular aperture used for aperture photometry in band 3, nominally 8.25 arcseconds. | |
| ntable | %7d | ---- | no | The total number of sources extracted in the photometry subsystem in the Single-exposure image frameset. | |
| nwpro_adb | %7d | ---- | no | The number of sources in the frameset which were actively deblended before performing profile-fit photometry. | |
| npro_nbad | %7d | ---- | no | The number of sources in the frameset whose profile fitting photometry failed with an uncertainty value less than 0.0. | |
| w1n3sig | %7d | ---- | yes | The number of sources in the frameset whose profile-fit photometry have SNR > 3 for band 1. | |
| w2n3sig | %7d | ---- | yes | The number of sources in the frameset whose profile-fit photometry have SNR > 3 for band 2. | |
| w3n3sig | %7d | ---- | yes | The number of sources in the frameset whose profile-fit photometry have SNR > 3 for band 3. | |
| w1n3sig_only | %7d | ---- | yes | The number of sources in the frameset whose profile-fit photometry have SNR > 3 in band 1 only. | |
| w2n3sig_only | %7d | ---- | yes | The number of sources in the frameset whose profile-fit photometry have SNR > 3 in band 2 only. | |
| w3n3sig_only | %7d | ---- | yes | The number of sources in the frameset whose profile-fit photometry have SNR > 3 in band 3 only. | |
| n12 | %7d | ---- | yes | The number of sources in the frameset whose profile-fit photometry have SNR > 3 in bands 1 and 2. | |
| n13 | %7d | ---- | yes | The number of sources in the frameset whose profile-fit photometry have SNR > 3 in bands 1 and 3. | |
| n23 | %7d | ---- | yes | The number of sources in the frameset whose profile-fit photometry have SNR > 3 in bands 2 and 3. | |
| n123 | %7d | ---- | yes | The number of sources in the frameset whose profile-fit photometry have SNR > 3 in bands 1, 2 and 3. | |
| nrchi_0_05 | %7d | ---- | no | The number of sources in the frameset whose profile-fit photomery have rchi2 values between 0 and 0.5. | |
| nrchi_05_2 | %7d | ---- | no | The number of sources in the frameset whose profile-fit photomery have rchi2 values between 0.5 and 2. | |
| nrchi_2_5 | %7d | ---- | no | The number of sources in the frameset whose profile-fit photomery have rchi2 values between 2 and 5. | |
| nrchi_5_15 | %7d | ---- | no | The number of sources in the frameset whose profile-fit photomery have rchi2 values between 5 and 15. | |
| nrchi_15 | %7d | ---- | no | The number of sources in the frameset whose profile-fit photomery have rchi2 values greater than 15. | |
| nblend_1 | %7d | ---- | no | The number of sources in the frameset which were not deblended before performing profile-fit photometry. | |
| nblend_2 | %7d | ---- | no | The number of sources in the frameset which were actively deblended into 2 individual sources. | |
| nblend_3 | %7d | ---- | no | The number of sources in the frameset which were actively deblended into 3 individual sources. | |
| nblend_4 | %7d | ---- | no | The number of sources in the frameset which were actively deblended into 4 individual sources. | |
| nblend_5 | %7d | ---- | no | The number of sources in the frameset which were actively deblended into 5 or more individual sources. | |
| w1n_rdiff | %6d | ---- | yes | The number of real sources which are flagged as contaminated by diffraction spikes in band 1. | |
| w2n_rdiff | %6d | ---- | yes | The number of real sources which are flagged as contaminated by diffraction spikes in band 2. | |
| w3n_rdiff | %6d | ---- | yes | The number of real sources which are flagged as contaminated by diffraction spikes in band 3. | |
| w1n_rlshort | %6d | ---- | yes | The number of real sources which are flagged as contaminated by short-term latents in band 1. | |
| w2n_rlshort | %6d | ---- | yes | The number of real sources which are flagged as contaminated by short-term latents in band 2. | |
| w3n_rlshort | %6d | ---- | yes | The number of real sources which are flagged as contaminated by short-term latents in band 3. | |
| w3n_rlldsresist | %6d | ---- | yes | The number of real sources affected by long-term latents which cannot be corrected by DYNASKY in band 3. | |
| w3n_rllong | %6d | ---- | yes | The number of real sources which are flagged as contaminated by long-term latents in band 3. | |
| w1n_rhalo | %6d | ---- | yes | The number of real sources which are flagged as contaminated by halos in band 1. | |
| w2n_rhalo | %6d | ---- | yes | The number of real sources which are flagged as contaminated by halos in band 2. | |
| w3n_rhalo | %6d | ---- | yes | The number of real sources which are flagged as contaminated by halos in band 3. | |
| w1n_roghost | %6d | ---- | yes | The number of real sources which are flagged as contaminated by optical ghosts in band 1. | |
| w2n_roghost | %6d | ---- | yes | The number of real sources which are flagged as contaminated by optical ghosts in band 2. | |
| w3n_roghost | %6d | ---- | yes | The number of real sources which are flagged as contaminated by optical ghosts in band 3. | |
| w1n_rglint | %6d | ---- | yes | The number of real sources which are flagged as contaminated by glints in band 1. | |
| w2n_rglint | %6d | ---- | yes | The number of real sources which are flagged as contaminated by glints in band 2. | |
| w3n_rglint | %6d | ---- | yes | The number of real sources which are flagged as contaminated by glints in band 3. | |
| w1n_sdiff | %6d | ---- | yes | The number of sources which are flagged as spurious detections of diffraction spikes in band 1. | |
| w2n_sdiff | %6d | ---- | yes | The number of sources which are flagged as spurious detections of diffraction spikes in band 2. | |
| w3n_sdiff | %6d | ---- | yes | The number of sources which are flagged as spurious detections of diffraction spikes in band 3. | |
| w1n_slshort | %6d | ---- | yes | The number of sources which are flagged as spurious detections due to short-term latents in band 1. | |
| w2n_slshort | %6d | ---- | yes | The number of sources which are flagged as spurious detections due to short-term latents in band 2. | |
| w3n_slshort | %6d | ---- | yes | The number of sources which are flagged as spurious detections due to short-term latents in band 3. | |
| w3n_slldsresist | %6d | ---- | yes | The number of sources flagged as spurious detections due to long-term latents which cannot be corrected by DYNASKY in band 3. | |
| w1n_shalo | %6d | ---- | yes | The number of sources which are flagged as spurious detections of halos in band 1. | |
| w2n_shalo | %6d | ---- | yes | The number of sources which are flagged as spurious detections of halos in band 2. | |
| w3n_shalo | %6d | ---- | yes | The number of sources which are flagged as spurious detections of halos in band 3. | |
| w1n_soghost | %6d | ---- | yes | The number of sources which are flagged as spurious detections of optical ghosts in band 1. | |
| w2n_soghost | %6d | ---- | yes | The number of sources which are flagged as spurious detections of optical ghosts in band 2. | |
| w3n_soghost | %6d | ---- | yes | The number of sources which are flagged as spurious detections of optical ghosts in band 3. | |
| w1n_rtot | %6d | ---- | yes | The total number of real sources which are flagged as contaminated by artifacts in band 1. | |
| w2n_rtot | %6d | ---- | yes | The total number of real sources which are flagged as contaminated by artifacts in band 2. | |
| w3n_rtot | %6d | ---- | yes | The total number of real sources which are flagged as contaminated by artifacts in band 3. | |
| n_rtot | %6d | ---- | no | The total number of real sources which are flagged as contaminated by artifacts in any band. | |
| w1n_stot | %6d | ---- | yes | The total number of sources which are flagged as spurious detections of artifacts in band 1. | |
| w2n_stot | %6d | ---- | yes | The total number of sources which are flagged as spurious detections of artifacts in band 2. | |
| w3n_stot | %6d | ---- | yes | The total number of sources which are flagged as spurious detections of artifacts in band 3. | |
| n_stot | %6d | ---- | no | The total number of sources which are flagged as spurious detections of artifacts in any band. | |
| rbovera | %6.4f | ---- | no | The axial ratio of the calculated frame PSF for the lowest band available. | |
| noisepix | %9.3f | pix | no | The effective number of noise pixels in the calculated frame PSF for the lowest band available. | |
| r_mean_20 | %6.3f | arcsec | yes | The mean radial separation of all the WISE-2MASS source associations in the frame having WISE w1snr ≥ 20. | |
| qual_frame | %2d | ---- | no | This integer indicates the quality score value for the Single-exposure image frameset, with values of 0 (poor quality), 5, or 10 (high quality). The value is determined by the minimum of the quality factors qc_fact, qn_fact, and qi_fact, multiplied by ten. | |
| qc_fact | %3.1f | ---- | no | This quality factor gauges the quality of completion of the Single-exposure image frameset. If the status value from the processing pipeline was equal to 0 (indicating a problem-free completion), then qc=1.0. Otherwise, qc=0.0 because the frameset failed to complete processing. All framesets in the Database have received qc values of 1.0. | |
| qi_fact | %3.1f | ---- | no | This quality factor gauges the image shape quality of the Single-exposure image frameset. It checks for potential image smearing by using the axial ratio of the PSF calculated from a subset of sources in the frameset. The value of qi is 1.0 if the axial ratio b/a > 0.60; otherwise it is 0.0. | |
| qn_fact | %3.1f | ---- | no | This quality factor indicates the background and noise characteristics quality of the Single-exposure frameset. | |
| qa_fact | %3.1f | ---- | no | This quality factor gauges the astrometric quality. If the standard deviation of WISE positions with respect to the 2MASS Point Source Catalog positions is < 0.5 arcsec on each axis (or 0.71 arcsec RSS), for sources having SNR > 20 in at least one band, then qa=1.0. Otherwise, qa=0.0. | |
| qual_scan | %2d | ---- | no | This integer indicates the quality score value for the scan containing the Single-exposure image frameset, with values of 0 (poor quality), 5, or 10 (high quality). The value is determined by the minimum of the quality factors qs1_fact, qs5_fact, and qp_fact, multiplied by ten. | |
| qs1_fact | %3.1f | ---- | no | This quality factor indicates the quality of scan synchronization as judged from the overall 1x1 PSF grid computed by the PSF Moments routine and evaluated based on the effective number of noise pixels. | |
| qs5_fact | %3.1f | ---- | no | This quality factor indicates the quality of scan synchronization as judged from the overall 5x5 PSF grid computed by the PSF Moments routine and evaluated based on the effective number of noise pixels. | |
| qp_fact | %3.1f | ---- | no | This quality factor indicates the scan photometric quality. If the scan's photometric zero-point offset computed using profile-fit photometry (pzp) falls within a certain range about 0, the value of qp_fact is 1.0; otherwise it is 0.0. | |
| cntr | %12d | ---- | no | Unique sequential identification number for the metadata table entry. | |
| x | %19.16f | ---- | yes | Unit sphere (x,y,z) position x value | |
| y | %19.16f | ---- | yes | Unit sphere (x,y,z) position y value | |
| z | %19.16f | ---- | yes | Unit sphere (x,y,z) position z value | |
| spt_ind | %9d | ---- | yes | HTM spatial (x,y,z) index key |
Last Updated: 2012 July 26