The Balrog matched MOF & SOF catalogs are correctly providing dereddened flux/mag quantities but the h5 mcal catalogs are not. There is a flux calibration part of the usual convert_mcal_to_h5() function in Troxel’s y3_matched_cat/make.py file that we were not able to do as we don’t have the necessary DESDM-provided chromatic calibration corrections that we decided wasn’t worth the effort given our timeline:
for band in ['r','i','z']:
corr = 10**(-0.4*(f2['catalog/gold/delta_mag_chrom_'+band][:]+f2['catalog/gold/delta_mag_y4_'+band][:]-f2['catalog/gold/a_sed_sfd98_'+band][:]))[s]
However, the dereddening is contained in this line. We don't need to apply the fully chromatic correction but still need to apply an approximation elsewhere - perhaps saving the dereddening factors used in add_deredden_cols.py to the matched catalogs and appending these to the detection catalog where they can be used by mcal stacking.
The Balrog matched MOF & SOF catalogs are correctly providing dereddened flux/mag quantities but the h5 mcal catalogs are not. There is a flux calibration part of the usual
convert_mcal_to_h5()function in Troxel’s y3_matched_cat/make.py file that we were not able to do as we don’t have the necessary DESDM-provided chromatic calibration corrections that we decided wasn’t worth the effort given our timeline:However, the dereddening is contained in this line. We don't need to apply the fully chromatic correction but still need to apply an approximation elsewhere - perhaps saving the dereddening factors used in
add_deredden_cols.pyto the matched catalogs and appending these to the detection catalog where they can be used by mcal stacking.