DetectionFlags values, e.g. column infoFlag in table Detection, and XinfoFlag (X one of g,r,i,z,y) in StackObjectThin
These values are also listed in system table DetectionFlags.
Flag Name | Flag value in hexadecimal form | Flag value in decimal form | Description of the flag | |
---|---|---|---|---|
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. |
DetectionFlags2 values, e.g. column infoFlag2 in table Detection, and XinfoFlag2 (X one of g,r,i,z,y) in StackObjectThin
These values are also listed in system table DetectionFlags2.
Flag Name | Flag value in hexadecimal form | Flag value in decimal form | Description of the flag |
---|---|---|---|
DEFAULT | 0x00000000 | 0 | Initial value; resets all bits. |
DIFF_WITH_SINGLE | 0x00000001 | 1 | Difference source matched to a single positive detection. |
DIFF_WITH_DOUBLE | 0x00000002 | 2 | Difference source matched to positive detections in both images. |
MATCHED | 0x00000004 | 4 | Difference source matched to positive detections in both images. |
ON_SPIKE | 0x00000008 | 8 | More than 25% of (PSF-weighted) pixels land on diffraction spike. |
ON_STARCORE | 0x00000010 | 16 | More than 25% of (PSF-weighted) pixels land on starcore. |
ON_BURNTOOL | 0x00000020 | 32 | More than 25% of (PSF-weighted) pixels land on burntool. |
ON_CONVPOOR | 0x00000040 | 64 | More than 25% of (PSF-weighted) pixels land on convpoor. |
PASS1_SRC | 0x00000080 | 128 | Source detected in first pass analysis |
HAS_BRIGHTER_NEIGHBOR | 0x00000100 | 256 | Peak is not the brightest in its footprint |
BRIGHT_NEIGHBOR_1 | 0x00000200 | 512 | Flux_negative / (r^2 flux_positive) > 1. |
BRIGHT_NEIGHBOR_10 | 0x00000400 | 1024 | Flux_negative / (r^2 flux_positive) > 10. |
DIFF_SELF_MATCH | 0x00000800 | 2048 | Positive detection match is probably this source. |
SATSTAR_PROFILE | 0x00001000 | 4096 | Saturated source is modeled with a radial profile. |
ECONTOUR_FEW_PTS | 0x00002000 | 8192 | Too few points to measure the elliptical contour. |
RADBIN_NAN_CENTER | 0x00004000 | 16384 | Radial bins failed with too many NaN center bin. |
PETRO_NAN_CENTER | 0x00008000 | 32768 | Petrosian (1976) radial bins failed with too many NaN center bin. |
PETRO_NO_PROFILE | 0x00010000 | 65536 | Petrosian (1976) not built becaues radial bins missing. |
PETRO_INSIG_RATIO | 0x00020000 | 131072 | Insignificant measurement of Petrosian (1976) ratio. |
PETRO_RATIO_ZEROBIN | 0x00040000 | 262144 | Petrosian (1976) ratio in the 0th bin (likely bad). |
EXT_FITS_RUN | 0x00080000 | 524288 | Attempted to run extended fits on this source. |
EXT_FITS_FAIL | 0x00100000 | 1048576 | At least one of the model fits failed. |
EXT_FITS_RETRY | 0x00200000 | 2097152 | One of the model fits was retried with new window. |
EXT_FITS_NONE | 0x00400000 | 4194304 | All of the model fits failed. |
DetectionFlags3 values, e.g. column infoFlag3 in table Detection, and XinfoFlag3 (X one of g,r,i,z,y) in StackObjectThin
These values are also listed in system table DetectionFlags3.
Flag Name | Flag value in hexadecimal form | Flag value in decimal form | Description of the flag |
---|---|---|---|
DEFAULT | 0x00000000 | 0 | Initial value; resets all bits. |
NOCAL | 0x00000001 | 1 | Detection ignored for this analysis (photcode\; time range) -- internal only. |
POOR_PHOTOM | 0x00000002 | 2 | Detection is photometry outlier. |
SKIP_PHOTOM | 0x00000004 | 4 | Detection was ignored for photometry measurement. |
AREA | 0x00000008 | 8 | Detection near image edge. |
POOR_ASTROM | 0x00000010 | 16 | Detection is astrometry outlier. |
SKIP_ASTROM | 0x00000020 | 32 | Detection was ignored for astrometry measurement. |
USED_OBJ | 0x00000040 | 64 | Detection was used during update objects |
USED_CHIP | 0x00000080 | 128 | Detection was used during update chips. |
BLEND_MEAS | 0x00000100 | 256 | Detection is within radius of multiple objects. |
BLEND_OBJ | 0x00000200 | 512 | Multiple detections within radius of object. |
WARP_USED | 0x00000400 | 1024 | Measurement used to find mean warp photometry. |
UNDEF_4 | 0x00000800 | 2048 | Unused bit value. |
BLEND_MEAS_X | 0x00001000 | 4096 | Detection is within radius of multiple objects across catalogs. |
ARTIFACT | 0x00002000 | 8192 | Detection is thought to be non-astronomical. |
SYNTH_MAG | 0x00004000 | 16384 | Magnitude is synthetic. |
PHOTOM_UBERCAL | 0x00008000 | 32768 | Externally-supplied zero point from ubercal analysis. |
STACK_PRIMARY | 0x00010000 | 65536 | This stack measurement is in the primary skycell. |
STACK_PHOT_SRC | 0x00020000 | 131072 | This measurement supplied the stack photometry. |
ICRF_QSO | 0x00040000 | 262144 | This measurement is an ICRF reference position. |
IMAGE_EPOCH | 0x00080000 | 524288 | This measurement is registered to the image epoch (not tied to the reference catalog epoch). |
PHOTOM_PSF | 0x00100000 | 1048576 | This measurement is used for the mean PSF magnitude. |
PHOTOM_APER | 0x00200000 | 2097152 | This measurement is used for the mean aperture magnitude. |
PHOTOM_KRON | 0x00400000 | 4194304 | This measurement is used for the mean Kron (1980) magnitude. |