ShearObject

Descriptions of shear objects detected and measured on coadds with metadetection.

Columns

name datatype description unit nullable ivoa:ucd tap:principal votable:arraysize length
shearObjectId primary key indexed long Unique identifier for a ShearObject, specific to a single metacalibration counterfactual image. true meta.id;src 1
tract long Skymap tract ID true 1
patch long Skymap patch ID true 1
cell_x int Column of the cell within the patch on which this measurement was made. true 0
cell_y int Row of the cell within the patch on which this measurement was made. true 0
metaStep char Type of artificial shear applied to image. One of 'ns', '1p', '1m', '2p', '2m'. true 0 2 2
image_flags int Flags for the image on which this measurement was made. true 0
x float Centroid (tract, x-axis) of the detected ShearObject. true 0
y float Centroid (tract, y-axis) of the detected ShearObject. true 0
ra double Detected Right Ascension of the ShearObject. deg true pos.eq.ra 0
dec double Detected Declination of the ShearObject. deg true pos.eq.dec 0
psfOriginal_flags int Flags for the original PSF measurement, ORed over the shear bands. true 0
psfOriginal_g1 float Reduced-shear g1 of the original PSF from adaptive moments, averaged over the shear bands. true 0
psfOriginal_g2 float Reduced-shear g2 of the original PSF from adaptive moments, averaged over the shear bands. true 0
psfOriginal_T float Trace (<x^2> + <y^2>) measurement of the original PSF from adaptive moments, averaged over the shear bands. arcsec**2 true 0
bmask_flags int bmask flags for the ShearObject. true 0
ormask_flags int ored mask flags for the ShearObject. true 0
mfrac float Gaussian-weighted masked fraction for the ShearObject. true 0
gauss_psfReconvolved_flags int Flags for reconvolved PSF (measured with gauss algorithm). true 0
gauss_psfReconvolved_g1 float Reduced-shear g1 of the reconvolved PSF (measured with gauss algorithm). true 0
gauss_psfReconvolved_g2 float Reduced-shear g2 of the reconvolved PSF (measured with gauss algorithm). true 0
gauss_psfReconvolved_T float Trace (<x^2> + <y^2>) of the reconvolved PSF (measured with gauss algorithm). arcsec**2 true 0
gauss_g1 float Reduced-shear g1 measurement of the ShearObject (measured with gauss algorithm). true 0
gauss_g2 float Reduced-shear g2 measurement of the ShearObject (measured with gauss algorithm). true 0
gauss_g1_g1_Cov float Auto-covariance of g1 measurement of the ShearObject (measured with gauss algorithm). true 0
gauss_g1_g2_Cov float Cross-covariance of g1 and g2 measurement of the ShearObject (measured with gauss algorithm). true 0
gauss_g2_g2_Cov float Auto-covariance of g2 measurement of the ShearObject (measured with gauss algorithm). true 0
gauss_snr float Signal-to-noise ratio measure of the ShearObject (measured with gauss algorithm). true 0
gauss_T float Trace (<x^2> + <y^2>) measurement of the ShearObject (measured with gauss algorithm). arcsec**2 true 0
gauss_TErr float Uncertainty in the trace measurement of the ShearObject (measured with gauss algorithm). arcsec**2 true 0
gauss_shape_flags int Flags for the second moments measurement of the ShearObject (measured with gauss algorithm). true 0
gauss_object_flags int Flags for the ShearObject measurement (measured with gauss algorithm). true 0
gauss_flags int Overall flags for gauss measurement algorithm. true 0
pgauss_snr float Signal-to-noise ratio measure of the ShearObject (measured with pgauss algorithm). true 0
pgauss_T float Trace (<x^2> + <y^2>) measurement of the ShearObject (measured with pgauss algorithm). arcsec**2 true 0
pgauss_TErr float Uncertainty in the trace measurement of the ShearObject (measured with pgauss algorithm). arcsec**2 true 0
pgauss_shape_flags int Flags for the second moments measurement of the ShearObject (measured with pgauss algorithm). true 0
pgauss_object_flags int Flags for the ShearObject measurement (measured with pgauss algorithm). true 0
pgauss_flags int Overall flags for pgauss measurement algorithm. true 0
g_gaussFlux_flags int Flags set for flux in g band measured with gauss algorithm. true 0
g_gaussFlux float Flux in g band (measured with gauss algorithm). nJy true 0
g_gaussFluxErr float Flux uncertainty in g band (measured with gauss algorithm). nJy true 0
r_gaussFlux_flags int Flags set for flux in r band measured with gauss algorithm. true 0
r_gaussFlux float Flux in r band (measured with gauss algorithm). nJy true 0
r_gaussFluxErr float Flux uncertainty in r band (measured with gauss algorithm). nJy true 0
i_gaussFlux_flags int Flags set for flux in i band measured with gauss algorithm. true 0
i_gaussFlux float Flux in i band (measured with gauss algorithm). nJy true 0
i_gaussFluxErr float Flux uncertainty in i band (measured with gauss algorithm). nJy true 0
z_gaussFlux_flags int Flags set for flux in z band measured with gauss algorithm. true 0
z_gaussFlux float Flux in z band (measured with gauss algorithm). nJy true 0
z_gaussFluxErr float Flux uncertainty in z band (measured with gauss algorithm). nJy true 0
g_pgaussFlux_flags int Flags set for flux in g band measured with pgauss algorithm. true 0
g_pgaussFlux float Flux in g band (measured with pgauss algorithm). nJy true 0
g_pgaussFluxErr float Flux uncertainty in g band (measured with pgauss algorithm). nJy true 0
r_pgaussFlux_flags int Flags set for flux in r band measured with pgauss algorithm. true 0
r_pgaussFlux float Flux in r band (measured with pgauss algorithm). nJy true 0
r_pgaussFluxErr float Flux uncertainty in r band (measured with pgauss algorithm). nJy true 0
i_pgaussFlux_flags int Flags set for flux in i band measured with pgauss algorithm. true 0
i_pgaussFlux float Flux in i band (measured with pgauss algorithm). nJy true 0
i_pgaussFluxErr float Flux uncertainty in i band (measured with pgauss algorithm). nJy true 0
z_pgaussFlux_flags int Flags set for flux in z band measured with pgauss algorithm. true 0
z_pgaussFlux float Flux in z band (measured with pgauss algorithm). nJy true 0
z_pgaussFluxErr float Flux uncertainty in z band (measured with pgauss algorithm). nJy true 0
is_cell_inner boolean Whether the object peak is within the inner cell boundary . true 0
is_patch_inner boolean Whether the object is within the inner patch boundary. true 0
is_tract_inner boolean Whether the object is within the inner tract boundary. true 0
is_primary boolean Whether this object is to be selected after de-duplication. true 0

Indexes

Index Definition Description
idx_ShearObject_shearObjectId shearObjectId Unique index on the shearObjectId column.