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Table: des_dr1.shape_metacal_riz_unblind
(The bold columns are indexed columns)
Column NameDescriptionDatatype
coadd_objects_idY1A1 unique object IDbigint
covmat_0_0The e1-e1 covariancedouble
covmat_0_0_1mThe e1-e1 covariance after applying a shear of g1=-0.01 to the image (in the metacal processdouble
covmat_0_0_1pThe e1-e1 covariance after applying a shear of g1=0.01 to the image (in the metacal process)double
covmat_0_0_2mThe e1-e1 covariance after applying a shear of g2=-0.01 to the image (in the metacal process)double
covmat_0_0_2pThe e1-e1 covariance after applying a shear of g2=0.01 to the image (in the metacal process)double
covmat_0_1The e1-e2 covariancedouble
covmat_0_1_1mThe e1-e2 covariance after applying a shear of g1=-0.01 to the image (in the metacal process)double
covmat_0_1_1pThe e1-e2 covariance after applying a shear of g1=0.01 to the image (in the metacal process)double
covmat_0_1_2mThe e1-e2 covariance after applying a shear of g2=-0.01 to the image (in the metacal process)double
covmat_0_1_2pThe e1-e2 covariance after applying a shear of g2=0.01 to the image (in the metacal process)double
covmat_1_1The e2-e2 covariancedouble
covmat_1_1_1mThe e2-e2 covariance after applying a shear of g1=-0.01 to the image (in the metacal process)double
covmat_1_1_1pThe e2-e2 covariance after applying a shear of g1=0.01 to the image (in the metacal process)double
covmat_1_1_2mThe e2-e2 covariance after applying a shear of g2=-0.01 to the image (in the metacal process)double
covmat_1_1_2pThe e2-e2 covariance after applying a shear of g2=0.01 to the image (in the metacal process)double
decDeclination (degrees) from the MOF catalogdouble
e1The measured ellipticity e1 in WCSdouble
e1_1mThe measured e1 after applying a shear of g1=-0.01 to the image (in the metacal process)double
e1_1pThe measured e1 after applying a shear of g1=0.01 to the image (in the metacal process)double
e1_2mThe measured e1 after applying a shear of g1=-0.01 to the image (in the metacal process)double
e1_2pThe measured e1 after applying a shear of g1=0.01 to the image (in the metacal process)double
e2The measured ellipticity e2 in WCSdouble
e2_1mThe measured e2 after applying a shear of g1=-0.01 to the image (in the metacal process)double
e2_1pThe measured e2 after applying a shear of g1=0.01 to the image (in the metacal process)double
e2_2mThe measured e2 after applying a shear of g1=-0.01 to the image (in the metacal process)double
e2_2pThe measured e2 after applying a shear of g1=0.01 to the image (in the metacal process)double
flagsQuality flagging used as bit 2^3 in flags_select. See Table METACALIBRATION flags_select at https://des.ncsa.illinois.edu/releases/y1a1/key-catalogs/key-shapeinteger
flags_selectSelection flag based on unshared quantities. 0 means use the object. See Table belowinteger
flags_select_1mSelection flag based on sheared (g1=-0.01) quantities. 0 means use the objectinteger
flags_select_1pSelection flag based on sheared (g1=0.01) quantities. 0 means use the objectinteger
flags_select_2mSelection flag based on sheared (g2=-0.01) quantities. 0 means use the objecinteger
flags_select_2pSelection flag based on sheared (g2=0.01) quantities. 0 means use the objectinteger
flux_err_iThe uncertainty on the i-band fluxdouble
flux_err_rThe uncertainty on the r-band fluxdouble
flux_err_zThe uncertainty on the z-band fluxdouble
flux_iThe measured i-band flux of the objectdouble
flux_i_1mThe measured i -band flux of the object after applying a shear of g1=-0.01 to the image (in the metacal process)double
flux_i_1pThe measured i -band flux of the object after applying a shear of g1=0.01 to the image (in the metacal process)double
flux_i_2mThe measured i -band flux of the object after applying a shear of g2=-0.01 to the image (in the metacal process)double
flux_i_2pThe measured i -band flux of the object after applying a shear of g2=0.01 to the image (in the metacal process)double
flux_rThe measured r-band flux of the objectdouble
flux_r_1mThe measured r-band flux of the object after applying a shear of g1=-0.01 to the image (in the metacal process)double
flux_r_1pThe measured r-band flux of the object after applying a shear of g1=0.01 to the image (in the metacal process)double
flux_r_2mThe measured r-band flux of the object after applying a shear of g2=-0.01 to the image (in the metacal process)double
flux_r_2pThe measured r-band flux of the object after applying a shear of g2=0.01 to the image (in the metacal process)double
flux_zThe measured z-band flux of the objectdouble
flux_z_1mThe measured z -band flux of the object after applying a shear of g1=-0.01 to the image (in the metacal process)double
flux_z_1pThe measured z -band flux of the object after applying a shear of g1=0.01 to the image (in the metacal process)double
flux_z_2mThe measured z -band flux of the object after applying a shear of g2=-0.01 to the image (in the metacal process)double
flux_z_2pThe measured z -band flux of the object after applying a shear of g2=0.01 to the image (in the metacal process)double
mask_fracThe fraction of masked model fluxdouble
mcal_psf_e1The PSF model ellipticity e1 used in the metacal process. For typical null tests, use psf_e1double
mcal_psf_e2The PSF model ellipticity e1 used in the metacal process. For typical null tests, use psf_e2double
mcal_psf_sizeThe PSF model size T (arcsec^2) used in the metacal process. For typical null tests, use psf_sizedouble
psf_e1The PSF model ellipticity e1 in WCSdouble
psf_e2The PSF model ellipticity e2 in WCSdouble
psf_sizeThe PSF model size T (arcsec^2). See Eq. 3.1 of Zuntz & Sheldon et al. (2018) for definition of Tdouble
r11The shear response matrix e1-e1 element. For details on calculation, see Zuntz & Sheldon et al. (2018). You must calculate the selection bias response to add to thisdouble
r12The shear response matrix e1-e2 elementdouble
r21The shear response matrix e2-e1 elementdouble
r22The shear response matrix e2-e2 elementdouble
raRight Ascension (degrees) from the MOF catalogdouble
regionWhich footprint region of the catalog the object is in. 1=SPT (used in the key project papers), 2=Stripe 82, 3=D04smallint
sizeThe measured object size T (arcsec^2)double
size_1mThe measured T after applying a shear of g1=-0.01 to the image (in the metacal process)double
size_1pThe measured T after applying a shear of g1=0.01 to the image (in the metacal process)double
size_2mThe measured T after applying a shear of g1=-0.01 to the image (in the metacal process)double
size_2pThe measured T after applying a shear of g1=0.01 to the image (in the metacal process)double
size_errThe uncertainty in the object size T (arcsec^2)double
size_err_1mThe uncertainty in T after applying a shear of g1=-0.01 to the image (in the metacal process)double
size_err_1pThe uncertainty in T after applying a shear of g1=0.01 to the image (in the metacal process)double
size_err_2mThe uncertainty in T after applying a shear of g2=-0.01 to the image (in the metacal process)double
size_err_2pThe uncertainty in T after applying a shear of g2=0.01 to the image (in the metacal process)double
snrThe measured signal-to-noise (snr) of the objectdouble
snr_1mThe snr of the object after applying a shear of g1=-0.01 to the image (in the metacal process)double
snr_1pThe snr of the object after applying a shear of g1=0.01 to the image (in the metacal process)double
snr_2mThe snr of the object after applying a shear of g2=-0.01 to the image (in the metacal process)double
snr_2pThe snr of the object after applying a shear of g2=0.01 to the image (in the metacal process)double
tilenameTile name of tile the object lies within. Each tile is a square of 10,000 pixels on a side, which makes up the extent of the coadd image. The position of the tile on the sky is encoded in its nameVARCHAR