COG Output Files and & Description (15 Dec 2008)
[cog02 WSDC D-I128]
Interface Name: COG Output Median COG and Aperture Corrections Table
Type of Interface: program I/O
Written By: Curve of Growth Module (COG) ______________ T. L. Evans
Read By: Database load
Description & Caveats:
Version 0.1 of COG (dated 081119)
Version 1.0 of COG (dated 081219)
This file contains the median COG and aperture corrections table. A file is
written for each band and PSF bin for which medians were calculated, i. e. the
bin contains at least the minimum number of "clean" sources. The table name
is determined by the input parameter 'outbase', the band, the total number of
PSF bins in X and Y, and this PSF bin location; for example:
[outbase]-w[band]-apcor-[NpsfX]x[NpsfY]-[thisNpsfX]x[thisNpsfY].tbl
or
/wise/fops/scans/1b/01301b/wcog-w2-apcor-05x05-02x04.tbl
______________________________________________________________________________________________
Specification of output variables:
Table Header information:
. Title: The title of the file, containing the originating program name (COG)
and the PSF bin identifier, which consists of the band and the PSF bin
location (XxY).
. Version: Version and runtime information.
. PSFName: The PSF bin identifier.
. Nsrcs: The number of "clean" sources in this PSF bin.
. ApConverg: The aperture number of the "optimal" aperture.
. TypeConverg: The type of convergence: convergence, divergence, or
non-convergence.
. Flag: A flag indicating any problems in calculating the medians or
convergence.
Tabular data:
col Name Description Units Type Format
--- ------- --------------------------------------------------------- ------- ---- ------
1 ap Aperture number (starting with 1) --- int d4
2 r Aperture radius in arcsec arcsec real e12.3
3 dm_med Median of 'dm' (m[i]-m[i+1]) for this aperture mag real e12.3
4 dm_rms RMS of the median 'dm' for this aperture mag real e12.3
5 dm_flg Flag indicating any problems calculating dm_med --- int d7
6 apcor_med Median value of the aperture correction for this aperture mag real e12.3
7 apcor_rms RMS of the median aperture correction for this aperture mag real e12.3
8 ap_flg Flag indicating any problems calculating apcor_med --- int d7
dm_flg and ap_flg values:
flag value condition
__________ ___________________________________________________________
0 Nominal
-4 Stopped iterative median calculation at max number of
iterations allowed
-5 Stopped iterative median calculation because fraction of
sources lost in n-RMS rejection > max allowed
-99 No calculation because 1) it is the largest aperture (for dm
only) OR 2) not enough sources available
Example table:
\char Title = Aperture Correction data: PSF w2-05x03
\char Version = COG v 0.10 081105 SVN:$Id Run at 2008-11-19 17:49:47
\char PSFname = w2-05x03
\int Nsrcs = 929
\int ApConverg = 6
\char TypeConverg = convergence
\int Flag = 0
|ap |r |dm_med |dm_rms |dm_flg|apcor_med |apcor_rms |ap_flg|
|int|real |real |real |int |real |real |int |
| |arcsec |mag |mag | |mag |mag | |
| | |null |null | | | | |
1 2.750e+00 8.540e-01 9.059e-02 0 -1.166e+00 1.583e-01 0
2 5.500e+00 1.870e-01 6.442e-02 0 -3.105e-01 1.444e-01 0
3 8.250e+00 7.000e-02 6.309e-02 0 -1.270e-01 1.177e-01 0
4 1.100e+01 3.900e-02 5.199e-02 0 -5.700e-02 8.671e-02 0
5 1.375e+01 1.800e-02 7.216e-02 0 -1.800e-02 7.216e-02 0
6 1.650e+01 6.000e-03 8.279e-02 0 0.000e+00 0.000e+00 0
7 1.925e+01 4.000e-03 8.921e-02 0 6.000e-03 8.279e-02 0
8 2.200e+01 -9.999e+01 -9.999e+01 -99 1.000e-02 1.302e-01 0