Vis Stacked Catalogue Product

Metadata

Data product name

DpdVisStackedFrameCatalog

Data product custodian

VIS

Name of the Schema file

euc-vis-StackedFrameCatalog.xsd

Processing Element(s) creating/using the data product

VIS_science_xml_out

Processing function using the data product

NIR processing functions.

Proposed for inclusion in EAS/SAS

Yes

Data product elements

Header

object of type sys:genericHeader

Data

object of type vis:visStackedFrameCatalogData

QualityFlags

object of type dqc:sqfPlaceHolder

Parameters

object of type ppr:genericKeyValueParameters

Detailed description of the data product

The VIS processing function provides a catalogue delivered in FITS “LDAC” format. These catalogues are produced using SExtractor on the stacked frame.

Name of file:

EUC_VIS_SWL_CAT-000-000000-0000000__[YYYYMMDDThhmmss.s]Z.fits.gz

where the date is the production date.

The PSF of the stacked image is calculated and fitted to the data to provide spread model and other PSF measurement.

This calibrated catalogue contains 2 type of catalogue :

  • The LDAC_IMHEAD catalog is a 1-column catalogue which contains the header and some information (like SE parameters) of the original image.

  • The LDAC_OBJECTS catalogue is a 73-colum catalogue. Some of these columns are detailed below.

Name

Units

NUMBER

n/a

X_IMAGE

pixel

Y_IMAGE

pixel

XPSF_IMAGE

pixel

YPSF_IMAGE

pixel

X_WORLD

deg

Y_WORLD

deg

ERRA_WORLD

deg

ERRB_WORLD

deg

ERRTHETA_WORLD

deg

XPSF_WORLD

deg

YPSF_WORLD

deg

ERRAPSF_WORLD

pixel

ERRBPSF_WORLD

pixel

ERRTHETAPSF_WORLD

deg

A_WORLD

deg

B_WORLD

deg

THETA_WORLD

deg

ERRX2_WORLD

deg**2

ERRY2_WORLD

deg**2

ALPHA_J2000

deg

DELTA_J2000

deg

ERRTHETA_J2000

deg

THETA_J2000

deg

XWIN_WORLD

deg

YWIN_WORLD

deg

ALPHAPSF_J2000

deg

DELTAPSF_J2000

deg

ERRTHETAPSF_J2000

deg

ALPHAWIN_J2000

deg

DELTAWIN_J2000

deg

ERRAWIN_WORLD

deg

ERRBWIN_WORLD

deg

ERRTHETAWIN_WORLD

deg

AWIN_WORLD

deg

BWIN_WORLD

deg

THETAWIN_WORLD

deg

ERRX2WIN_WORLD

deg**2

ERRY2WIN_WORLD

deg**2

MU_THRESHOLD

mag * arcsec**(-2)

MU_MAX

mag * arcsec**(-2)

MU_MAX_MODEL

mag * arcsec**(-2)

MU_EFF_MODEL

mag * arcsec**(-2)

MU_MEAN_MODEL

mag * arcsec**(-2)

MU_MAX_SPHEROID

mag * arcsec**(-2)

MU_EFF_SPHEROID

mag * arcsec**(-2)

MU_MEAN_SPHEROID

mag * arcsec**(-2)

MU_MAX_DISK

mag * arcsec**(-2)

MU_EFF_DISK

mag * arcsec**(-2)

MU_MEAN_DISK

mag * arcsec**(-2)

ELLIPTICITY

n/a

FLUX_AUTO

count

FLUXERR_AUTO

count

MAG_AUTO

mag

MAGERR_AUTO

mag

BACKGROUND

count

MAG_APER

mag

MAGERR_APER

mag

FLUX_APER

count

FLUXERR_APER

count

MAG_PSF

mag

MAGERR_PSF

mag

FLUX_RADIUS

pixel

ELONGATION

n/a

FWHM_IMAGE

pixel

SNR_WIN

n/a

SPREAD_MODEL

n/a

FLAGS

n/a

FLAGS_WIN

n/a

FLAGS_MODEL

n/a

ERRAWIN_IMAGE

pixel

ERRBWIN_IMAGE

pixel

ERRTHETAWIN_IMAGE

deg

VECTOR_MODEL

n/a

VECTOR_MODELERR

n/a

MATRIX_MODELERR

n/a

CHI2_MODEL

n/a

NITER_MODEL

n/a

FLUX_MODEL

count

FLUXERR_MODEL

count

MAG_MODEL

mag

MAGERR_MODEL

mag

XMODEL_IMAGE

pixel

YMODEL_IMAGE

pixel

XMODEL_WORLD

deg

YMODEL_WORLD

deg

ELLIP1MODEL_IMAGE

n/a

ELLIP2MODEL_IMAGE

n/a

ELLIP1ERRMODEL_IMAGE

n/a

ELLIP2ERRMODEL_IMAGE

n/a

ELLIPCORRMODEL_IMAGE

n/a

ELLIP1MODEL_WORLD

n/a

ELLIP2MODEL_WORLD

n/a

ELLIP1ERRMODEL_WORLD

n/a

ELLIP2ERRMODEL_WORLD

n/a

ELLIPCORRMODEL_WORLD

n/a

XWIN_IMAGE

pixel

YWIN_IMAGE

pixel

SNR

n/a