Schema for dp01_dc2_catalogs.forced_photometry

Principal Columns

coord_dec (unit=rad, type=double): position in ra/dec

coord_ra (unit=rad, type=double): position in ra/dec

objectId (type=long): Unique id.

[f]_base_ClassificationExtendedness_flag (type=boolean): Set to 1 for any fatal failure.

[f]_base_ClassificationExtendedness_value (type=double): Set to 1 for extended sources, 0 for point sources.

[f]_good (type=boolean): True if the source has no flagged pixels.

[f]_modelfit_CModel_instFlux (unit=count, type=double): flux from the final cmodel fit

[f]_modelfit_CModel_instFluxErr (unit=count, type=double): flux uncertainty from the final cmodel fit

All Other Columns

[f]_base_InputCount_flag (type=boolean): Set for any fatal failure

[f]_base_InputCount_flag_badCentroid (type=boolean): General Failure Flag

[f]_base_InputCount_flag_noInputs (type=boolean): No coadd inputs available

[f]_base_InputCount_value (type=int): Number of images contributing at center, not including anyclipping

[f]_base_LocalBackground_flag (type=boolean): General Failure Flag

[f]_base_LocalBackground_flag_badCentroid (type=boolean): General Failure Flag

[f]_base_LocalBackground_flag_noGoodPixels (type=boolean): no good pixels in the annulus

[f]_base_LocalBackground_flag_noPsf (type=boolean): no PSF provided

[f]_base_LocalBackground_instFlux (unit=count, type=double): background in annulus around source

[f]_base_LocalBackground_instFluxErr (unit=count, type=double): 1-sigma instFlux uncertainty

[f]_base_PixelFlags_flag (type=boolean): General failure flag, set if anything went wrong

[f]_base_PixelFlags_flag_bad (type=boolean): Bad pixel in the Source footprint

[f]_base_PixelFlags_flag_bright_object (type=boolean): Source footprint includes BRIGHT_OBJECT pixels

[f]_base_PixelFlags_flag_bright_objectCenter (type=boolean): Source center is close to BRIGHT_OBJECT pixels

[f]_base_PixelFlags_flag_clipped (type=boolean): Source footprint includes CLIPPED pixels

[f]_base_PixelFlags_flag_clippedCenter (type=boolean): Source center is close to CLIPPED pixels

[f]_base_PixelFlags_flag_cr (type=boolean): Cosmic ray in the Source footprint

[f]_base_PixelFlags_flag_crCenter (type=boolean): Cosmic ray in the Source center

[f]_base_PixelFlags_flag_edge (type=boolean): Source is outside usable exposure region (masked EDGE or NO_DATA)

[f]_base_PixelFlags_flag_inexact_psf (type=boolean): Source footprint includes INEXACT_PSF pixels

[f]_base_PixelFlags_flag_inexact_psfCenter (type=boolean): Source center is close to INEXACT_PSF pixels

[f]_base_PixelFlags_flag_interpolated (type=boolean): Interpolated pixel in the Source footprint

[f]_base_PixelFlags_flag_interpolatedCenter (type=boolean): Interpolated pixel in the Source center

[f]_base_PixelFlags_flag_offimage (type=boolean): Source center is off image

[f]_base_PixelFlags_flag_rejected (type=boolean): Source footprint includes REJECTED pixels

[f]_base_PixelFlags_flag_rejectedCenter (type=boolean): Source center is close to REJECTED pixels

[f]_base_PixelFlags_flag_saturated (type=boolean): Saturated pixel in the Source footprint

[f]_base_PixelFlags_flag_saturatedCenter (type=boolean): Saturated pixel in the Source center

[f]_base_PixelFlags_flag_sensor_edge (type=boolean): Source footprint includes SENSOR_EDGE pixels

[f]_base_PixelFlags_flag_sensor_edgeCenter (type=boolean): Source center is close to SENSOR_EDGE pixels

[f]_base_PixelFlags_flag_suspect (type=boolean): Source’’s footprint includes suspect pixels

[f]_base_PixelFlags_flag_suspectCenter (type=boolean): Source’’s center is close to suspect pixels

[f]_base_PsfFlux_apCorr (type=double): aperture correction applied to base_PsfFlux

[f]_base_PsfFlux_apCorrErr (type=double): standard deviation of aperture correction applied to base_PsfFlux

[f]_base_PsfFlux_area (unit=pixel, type=double): effective area of PSF

[f]_base_PsfFlux_flag (type=boolean): General Failure Flag

[f]_base_PsfFlux_flag_apCorr (type=boolean): set if unable to aperture correct base_PsfFlux

[f]_base_PsfFlux_flag_badCentroid (type=boolean): General Failure Flag

[f]_base_PsfFlux_flag_edge (type=boolean): object was too close to the edge of the image to use the full PSF model

[f]_base_PsfFlux_flag_noGoodPixels (type=boolean): not enough non-rejected pixels in data to attempt the fit

[f]_base_PsfFlux_instFlux (unit=count, type=double): instFlux derived from linear least-squares fit of PSF model

[f]_base_PsfFlux_instFluxErr (unit=count, type=double): 1-sigma instFlux uncertainty

[f]_base_SdssCentroid_flag (type=boolean): General Failure Flag

[f]_base_SdssCentroid_flag_almostNoSecondDerivative (type=boolean): Almost vanishing second derivative

[f]_base_SdssCentroid_flag_badInitialCentroid (type=boolean): whether the reference centroid is marked as bad

[f]_base_SdssCentroid_flag_edge (type=boolean): Object too close to edge

[f]_base_SdssCentroid_flag_noSecondDerivative (type=boolean): Vanishing second derivative

[f]_base_SdssCentroid_flag_notAtMaximum (type=boolean): Object is not at a maximum

[f]_base_SdssCentroid_flag_resetToPeak (type=boolean): set if CentroidChecker reset the centroid

[f]_base_SdssCentroid_x (unit=pixel, type=double): centroid from Sdss Centroid algorithm

[f]_base_SdssCentroid_xErr (unit=pixel, type=double): 1-sigma uncertainty on x position

[f]_base_SdssCentroid_y (unit=pixel, type=double): centroid from Sdss Centroid algorithm

[f]_base_SdssCentroid_yErr (unit=pixel, type=double): 1-sigma uncertainty on y position

[f]_base_SdssShape_flag (type=boolean): General Failure Flag

[f]_base_SdssShape_flag_badCentroid (type=boolean): General Failure Flag

[f]_base_SdssShape_flag_maxIter (type=boolean): Too many iterations in adaptive moments

[f]_base_SdssShape_flag_psf (type=boolean): Failure in measuring PSF model shape

[f]_base_SdssShape_flag_shift (type=boolean): centroid shifted by more than the maximum allowed amount

[f]_base_SdssShape_flag_unweighted (type=boolean): Weighted moments converged to an invalid value; using unweighted moments

[f]_base_SdssShape_flag_unweightedBad (type=boolean): Both weighted and unweighted moments were invalid

[f]_base_SdssShape_instFlux (unit=count, type=double): elliptical Gaussian adaptive moments

[f]_base_SdssShape_instFlux_xx_Cov (unit=count*pixel^2, type=double): uncertainty covariance between base_SdssShape_instFlux and base_SdssShape_xx

[f]_base_SdssShape_instFlux_xy_Cov (unit=count*pixel^2, type=double): uncertainty covariance between base_SdssShape_instFlux and base_SdssShape_xy

[f]_base_SdssShape_instFlux_yy_Cov (unit=count*pixel^2, type=double): uncertainty covariance between base_SdssShape_instFlux and base_SdssShape_yy

[f]_base_SdssShape_instFluxErr (unit=count, type=double): 1-sigma instFlux uncertainty

[f]_base_SdssShape_psf_xx (unit=pixel^2, type=double): adaptive moments of the PSF model at the object position

[f]_base_SdssShape_psf_xy (unit=pixel^2, type=double): adaptive moments of the PSF model at the object position

[f]_base_SdssShape_psf_yy (unit=pixel^2, type=double): adaptive moments of the PSF model at the object position

[f]_base_SdssShape_x (unit=pixel, type=double): elliptical Gaussian adaptive moments

[f]_base_SdssShape_xx (unit=pixel^2, type=double): elliptical Gaussian adaptive moments

[f]_base_SdssShape_xxErr (unit=pixel^2, type=double): Standard deviation of xx moment

[f]_base_SdssShape_xy (unit=pixel^2, type=double): elliptical Gaussian adaptive moments

[f]_base_SdssShape_xyErr (unit=pixel^2, type=double): Standard deviation of xy moment

[f]_base_SdssShape_y (unit=pixel, type=double): elliptical Gaussian adaptive moments

[f]_base_SdssShape_yy (unit=pixel^2, type=double): elliptical Gaussian adaptive moments

[f]_base_SdssShape_yyErr (unit=pixel^2, type=double): Standard deviation of yy moment

[f]_base_Variance_flag (type=boolean): Set for any fatal failure

[f]_base_Variance_flag_badCentroid (type=boolean): General Failure Flag

[f]_base_Variance_flag_emptyFootprint (type=boolean): Set to True when the footprint has no usable pixels

[f]_base_Variance_value (type=double): Variance at object position

[f]_modelfit_CModel_apCorr (type=double): aperture correction applied to modelfit_CModel

[f]_modelfit_CModel_apCorrErr (type=double): standard deviation of aperture correction applied to modelfit_CModel

[f]_modelfit_CModel_dev_apCorr (type=double): aperture correction applied to modelfit_CModel_dev

[f]_modelfit_CModel_dev_apCorrErr (type=double): standard deviation of aperture correction applied to modelfit_CModel_dev

[f]_modelfit_CModel_dev_flag (type=boolean): flag set when the flux for the de Vaucouleur flux failed

[f]_modelfit_CModel_dev_flag_apCorr (type=boolean): set if unable to aperture correct modelfit_CModel_dev

[f]_modelfit_CModel_dev_flag_badReference (type=boolean): The original fit in the reference catalog failed.

[f]_modelfit_CModel_dev_flag_numericError (type=boolean): numerical underflow or overflow in model evaluation; usually this means the prior was insufficient to regularize the fit, or all pixel values were zero.

[f]_modelfit_CModel_dev_flux_inner (unit=count, type=double): flux from the de Vaucouleur fit region, with no extrapolation

[f]_modelfit_CModel_dev_instFlux (unit=count, type=double): flux from the de Vaucouleur fit

[f]_modelfit_CModel_dev_instFluxErr (unit=count, type=double): flux uncertainty from the de Vaucouleur fit

[f]_modelfit_CModel_exp_apCorr (type=double): aperture correction applied to modelfit_CModel_exp

[f]_modelfit_CModel_exp_apCorrErr (type=double): standard deviation of aperture correction applied to modelfit_CModel_exp

[f]_modelfit_CModel_exp_flag (type=boolean): flag set when the flux for the exponential flux failed

[f]_modelfit_CModel_exp_flag_apCorr (type=boolean): set if unable to aperture correct modelfit_CModel_exp

[f]_modelfit_CModel_exp_flag_badReference (type=boolean): The original fit in the reference catalog failed.

[f]_modelfit_CModel_exp_flag_numericError (type=boolean): numerical underflow or overflow in model evaluation; usually this means the prior was insufficient to regularize the fit, or all pixel values were zero.

[f]_modelfit_CModel_exp_flux_inner (unit=count, type=double): flux from the exponential fit region, with no extrapolation

[f]_modelfit_CModel_exp_instFlux (unit=count, type=double): flux from the exponential fit

[f]_modelfit_CModel_exp_instFluxErr (unit=count, type=double): flux uncertainty from the exponential fit

[f]_modelfit_CModel_flag (type=boolean): flag set if the final cmodel fit (or any previous fit) failed

[f]_modelfit_CModel_flag_apCorr (type=boolean): set if unable to aperture correct modelfit_CModel

[f]_modelfit_CModel_flag_badCentroid (type=boolean): input centroid was not within the fit region (probably because it’’s not within the Footprint)

[f]_modelfit_CModel_flag_badReference (type=boolean): The original fit in the reference catalog failed.

[f]_modelfit_CModel_flag_noShapeletPsf (type=boolean): the multishapelet fit to the PSF model did not succeed

[f]_modelfit_CModel_flag_region_maxArea (type=boolean): number of pixels in fit region exceeded the region.maxArea value

[f]_modelfit_CModel_flag_region_maxBadPixelFraction (type=boolean): the fraction of bad/clipped pixels in the fit region exceeded region.maxBadPixelFraction

[f]_modelfit_CModel_fracDev (type=double): fraction of flux in de Vaucouleur component

[f]_modelfit_CModel_initial_apCorr (type=double): aperture correction applied to modelfit_CModel_initial

[f]_modelfit_CModel_initial_apCorrErr (type=double): standard deviation of aperture correction applied to modelfit_CModel_initial

[f]_modelfit_CModel_initial_flag (type=boolean): flag set when the flux for the initial flux failed

[f]_modelfit_CModel_initial_flag_apCorr (type=boolean): set if unable to aperture correct modelfit_CModel_initial

[f]_modelfit_CModel_initial_flag_badReference (type=boolean): The original fit in the reference catalog failed.

[f]_modelfit_CModel_initial_flag_numericError (type=boolean): numerical underflow or overflow in model evaluation; usually this means the prior was insufficient to regularize the fit, or all pixel values were zero.

[f]_modelfit_CModel_initial_flux_inner (unit=count, type=double): flux from the initial fit region, with no extrapolation

[f]_modelfit_CModel_initial_instFlux (unit=count, type=double): flux from the initial fit

[f]_modelfit_CModel_initial_instFluxErr (unit=count, type=double): flux uncertainty from the initial fit

[f]_modelfit_CModel_instFlux_inner (unit=count, type=double): flux within the fit region, with no extrapolation

[f]_modelfit_CModel_objective (type=double): -ln(likelihood) (chi^2) in cmodel fit