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ObjectQualityFlags values, e.g., column qualityFlag in table ObjectThin

These values are also listed in the system metadata table ObjectQualityFlags.

Flag nameFlag value in hexadecimal formFlag value in decimal formDescription of the flag
DEFAULT0x000000000Initial value; resets all bits.
QF_OBJ_EXT0x000000011Extended in our data (eg, PS).
QF_OBJ_EXT_ALT0x000000022Extended in external data (eg, 2MASS).
QF_OBJ_GOOD0x000000044Good-quality measurement in our data (eg,PS).
QF_OBJ_GOOD_ALT0x000000088Good-quality measurement in external data (eg, 2MASS).
QF_OBJ_GOOD_STACK0x0000001016good-quality object in the stack (> 1 good stack measurement)
QF_OBJ_BEST_STACK0x0000002032the primary stack measurements are the best measurements.
QF_OBJ_SUSPECT_STACK0x0000004064suspect object in the stack (no more than 1 good measurement, 2 or more suspect or good stack measurement).
QF_OBJ_BAD_STACK0x00000080128poor-quality stack object (no more than 1 good or suspect measurement).

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ObjectInfoFlags values, e.g., column objInfoFlag in table ObjectThin

These values are also listed in the system metadata table ObjectInfoFlags.

 Flag nameFlag value in hexadecimal formFlag value in decimal formDescription of the flag
DEFAULT0x000000000Initial value; resets all bits.
FEW0x000000011Used within relphot; skip star.
POOR0x000000022Used within relphot; skip star.
ICRF_QSO0x000000044object IDed with known ICRF quasar (may have ICRF position measurement)
HERN_QSO_P600x000000088identified as likely QSO (Hernitschek et al 2015), P_QSO >= 0.60
HERN_QSO_P050x0000001016identified as possible QSO (Hernitschek et al 2015), P_QSO >= 0.05
HERN_RRL_P600x0000002032identified as likely RR Lyra (Hernitschek et al 2015), P_RRLyra >= 0.60
HERN_RRL_P050x0000004064identified as possible RR Lyra (Hernitschek et al 2015), P_RRLyra >= 0.05
HERN_VARIABLE0x00000080128identified as a variable based on ChiSq (Hernitschek et al 2015)
TRANSIENT0x00000100256identified as a non-periodic (stationary) transient
HAS_SOLSYS_DET0x00000200512at least one detection identified with a known solar-system object (asteroid or other).
MOST_SOLSYS_DET0x000004001024most detections identified with a known solar-system object (asteroid or other).
LARGE_PM0x000008002048star with large proper motion
RAW_AVE0x000010004096simple weighted average position was used (no IRLS fitting)
FIT_AVE0x000020008192average position was fitted
FIT_PM0x0000400016384proper motion model was fitted
FIT_PAR0x0000800032768parallax model was fitted
USE_AVE0x0001000065536average position used (not PM or PAR)
USE_PM0x00020000131072proper motion used (not AVE or PAR)
USE_PAR0x00040000262144parallax used (not AVE or PM)
NO_MEAN_ASTROM0x00080000524288mean astrometry could not be measured
STACK_FOR_MEAN0x001000001048576stack position used for mean astrometry
MEAN_FOR_STACK0x002000002097152mean astrometry used for stack position
BAD_PM0x004000004194304failure to measure proper-motion model
EXT0x008000008388608extended in our data (eg, PS)
EXT_ALT0x0100000016777216extended in external data (eg, 2MASS)
GOOD0x0200000033554432good-quality measurement in our data (eg,PS)
GOOD_ALT0x0400000067108864good-quality measurement in external data (eg, 2MASS)
GOOD_STACK0x08000000134217728good-quality object in the stack (> 1 good stack measurement)
BEST_STACK0x10000000268435456the primary stack measurements are the best measurements
SUSPECT_STACK0x20000000536870912suspect object in the stack (no more than 1 good measurement, 2 or more suspect or good stack measurement)
BAD_STACK0x400000001073741824poor-quality stack object (no more than 1 good or suspect measurement)

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ObjectFilterFlags values, e.g., column gFlags in table MeanObject

These values are also listed in the system metadata table

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ObjectFilterFlags.

NameSource has an aperture magnitudeFull extended fit was used aperture stats calculated.Peak lands off edge of chip.

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

SECF_STAR_FEW

0x00000001

1

Source fitted with a psf model (linear or non-linear).EXTMODEL

Used within relphot: skip star.

SECF_STAR_POOR

0x00000002

2

Source fitted with an extended-source model.FITTED

Used within relphot: skip star.

SECF_USE_SYNTH

0x00000004

4

Source fitted with non-linear model (PSF or EXT; good or bad).FAIL

Synthetic photometry used in average measurement.

SECF_USE_UBERCAL

0x00000008

8

Fit (non-linear) failed (non-converge\; off-edge\; run to zero).
POOR0x0000001016Fit succeeds\; but low-S/N\; high-Chisq\; or large (for PSF -- drop?).
PAIR0x0000002032Source fitted with a double PSF.
PSFSTAR

Ubercal photometry used in average measurement.

SECF_HAS_PS1

0x00000010

16

PS1 photometry used in average measurement.

SECF_HAS_PS1_STACK

0x00000020

32

PS1 stack photometry exists.

SECF_HAS_TYCHO

0x00000040

64

Source used to define PSF model.SATSTAR

Tycho photometry used for synthetic magnitudes.

SECF_FIX_SYNTH

0x00000080

128

Source model peak is above saturation.BLEND

Synthetic magnitudes repaired with zeropoint map.

SECF_RANK_0

0x00000100

256

Source is a blend with other sources.EXTERNAL

Average magnitude uses only rank 0 detections.

SECF_RANK_1

0x00000200

512

Source based on supplied input position.BADPSF

Average magnitude uses only rank 1 detections.

SECF_RANK_2

0x00000400

1024

Failed to get good estimate of object's PSF.DEFECT

Average magnitude uses only rank 2 detections.

SECF_RANK_3

0x00000800

2048

Source is thought to be a defect.SATURATED

Average magnitude uses only rank 3 detections.

SECF_RANK_4

0x00001000

4096

Source is thought to be saturated pixels (bleed trail).
CR_LIMIT0x000020008192Source has crNsigma above limit.
EXT_LIMIT

Average magnitude uses only rank 4 detections.

SECF_STACK_PRIMARY

0x00004000

16384

Source has extNsigma above limit.MOMENTS_FAILURE

PS1 stack photometry comes from primary skycell.

SECF_STACK_BESTDET

0x00008000

32768

Could not measure the moments.SKY_FAILURE

PS1 stack best measurement is a detection (not forced).

SECF_STACK_PRIMDET

0x00010000

65536

Could not measure the local sky.
SKYVAR_FAILURE0x00020000131072Could not measure the local sky variance.
BELOW_MOMENTS_SN0x00040000262144Moments not measured due to low S/N.
UNDEF_10x00080000524288Unused bit value.
BIG_RADIUS0x001000001048576Poor moments for small radius\; try large radius.
AP_MAGS

PS1 stack primary measurement is a detection (not forced).

SECF_HAS_SDSS

0x00100000

1048576

This photcode has SDSS photometry.

SECF_HAS_HSC

0x00200000

2097152

This photcode has HSC photometry.

BLEND

SECF_HAS_

FIT

CFH

0x00400000

4194304

Source was fitted as a blend.EXTENDED_FIT

This photcode has CFH photometry (mostly Megacam).

SECF_HAS_DES

0x00800000

8388608

This photcode has DES photometry.

EXTENDED

SECF_OBJ_

STATS

EXT

0x01000000

16777216

Extended

LINEAR_FIT0x0200000033554432Source fitted with the linear fit.
NONLINEAR_FIT0x0400000067108864Source fitted with the non-linear fit.
RADIAL_FLUX0x08000000134217728Radial flux measurements calculated.
SIZE_SKIPPED0x10000000268435456Size could not be determined.
PEAK_ON_SPIKE0x20000000536870912Peak lands on diffraction spike.
PEAK_ON_GHOST0x400000001073741824Peak lands on ghost or glint.
PEAK_OFF_CHIP0x800000002147483648

in this band.

ForcedGalaxyShapeFlags values, e.g., column gGalFlags in table ForcedGalaxyShape

These values are also listed in the system metadata table ForcedGalaxyShapeFlags.

Flag name

Flag value in hexadecimal form

Flag value in decimal form

Description of the flag

NO_ERROR

0x00000000

0

No error condition raised.

FAIL_FIT

0x00000001

1

Fit failed to converge or was degenerate

TOO_FEW

0x00000002

2

Not enough points to fit the model

OUT_OF_RANGE

0x00000004

4

Fit minimum too far outside data range

BAD_ERROR

0x00000008

8

Invalid size error (nan or inf)

Column XinfoFlag (X one of g,r,i,z,y) in StackObjectThin

See DetectionFlags in PS1 Detection Flags

Column XinfoFlag2 (X one of g,r,i,z,y) in StackObjectThin

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See DetectionFlags2 in PS1 Detection Flags

Column XinfoFlag3 (X one of g,r,i,z,y) in StackObjectThin

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See DetectionFlags3 in PS1 Detection Flags