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DetectionFlags values, e.g. column infoFlag in table Detection (DR2 only), 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 (DR2 only), 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 (DR2 only), and XinfoFlag3 (X one of g, r, i, z, y) in StackObjectThin
These values are also listed in system table DetectionFlags3.
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