Things marked in bold are changes compared to what was already in ipptopsps. Things marked EAM I would like guidance on from EAM to make sure the description is correct.


=== Image Flags ===
||NEW||0x00000000||0||No relphot / relastro attempted.||
||PHOTOM_NOCAL||0x00000001||1||'''Used within relphot to mean 'don't apply fit'. | user-set value used withing relphot: ignore (EAM!)'''||
||PHOTOM_POOR||0x00000002||2||'''Relphot says image is bad (dMcal > limit). (EAM!)'''||          
||PHOTOM_SKIP||0x00000004||4||'''External information image has bad photometry (EAM).'''||
||PHOTOM_FEW||0x00000008||8||Currently too few measurements for good value for photometry.||          
||ASTROM_NOCAL||0x00000010||16||'''User-set value used within relastro: ignore (EAM!).'''||
||ASTROM_POOR||0x00000020||32||Relastro says image is bad (dR,dD > limit).||
||ASTROM_FAIL||0x00000040||64||Relastro fit diverged, fit not applied.||
||ASTROM_SKIP||0x00000080||128||'''External information image has bad astrometry. (EAM)'''||
||ASTROM_FEW||0x00000100||256||Currently too few measurements for good value for astrometry.||
||PHOTOM_UBERCAL||0x00000200||512||Externally-supplied photometry zero point from ubercal analysis.||
||ASTROM_GMM||0x00000400||1024||Image was fitted to positions corrected by the galaxy motion model.||

=== Detection Flags ===

||DEFAULT||0x00000000||0         ||Initial value; resets all bits.||
||PSFMODEL||0x00000001||1         ||Source fitted with a psf model (linear or non-linear).||
||EXTMODEL||0x00000002||2         ||Source fitted with an extended-source model.||
||FITTED||0x00000004||4         ||Source fitted with non-linear model (PSF or EXT; good or bad).||
||FAIL||0x00000008||8         ||Fit (non-linear) failed (non-converge, off-edge, run to zero).||
||POOR||0x00000010||16        ||Fit succeeds, but low-S/N, high-Chisq, or large (for PSF -- drop?).||
||PAIR||0x00000020||32        ||Source fitted with a double PSF.||
||PSFSTAR||0x00000040||64        ||Source used to define PSF model.||
||SATSTAR||0x00000080||128       ||Source model peak is above saturation.||
||BLEND||0x00000100||256       ||Source is a blend with other sources.||
||EXTERNAL||0x00000200||512       ||Source based on supplied input position.||
||BADPSF||0x00000400||1024      ||Failed to get good estimate of object's PSF.||
||DEFECT||0x00000800||2048      ||Source is thought to be a defect.||
||SATURATED||0x00001000||4096      ||Source is thought to be saturated pixels (bleed trail).||
||CR_LIMIT||0x00002000||8192      ||Source has crNsigma above limit.||
||EXT_LIMIT||0x00004000||16384     ||Source has extNsigma above limit.||
||MOMENTS_FAILURE||0x00008000||32768     ||Could not measure the moments.||
||SKY_FAILURE||0x00010000||65536     ||Could not measure the local sky.||
||SKYVAR_FAILURE||0x00020000||131072    ||Could not measure the local sky variance.||
||BELOW_MOMENTS_SN||0x00040000||262144    ||Moments not measured due to low S/N.||
||UNDEF_1||0x00080000||524288    ||Unused bit value.||
||BIG_RADIUS||0x00100000||1048576   ||Poor moments for small radius, try large radius.||
||AP_MAGS||0x00200000||2097152   ||Source has an aperture magnitude.||
||BLEND_FIT||0x00400000||4194304   ||Source was fitted as a blend.||
||EXTENDED_FIT||0x00800000||8388608   ||Full extended fit was used.||
||EXTENDED_STATS||0x01000000||16777216  ||Extended aperture stats calculated.||
||LINEAR_FIT||0x02000000||33554432  ||Source fitted with the linear fit.||
||NONLINEAR_FIT||0x04000000||67108864  ||Source fitted with the non-linear fit.||
||RADIAL_FLUX||0x08000000||134217728 ||Radial flux measurements calculated.||
||SIZE_SKIPPED||0x10000000||268435456 ||Size could not be determined.||
||PEAK_ON_SPIKE||0x20000000||536870912 ||Peak lands on diffraction spike.||
||PEAK_ON_GHOST||0x40000000||1073741824||Peak lands on ghost or glint.||
||PEAK_OFF_CHIP||0x80000000||2147483648||Peak lands off edge of chip.||