NIR Stacked Frame Catalog

Metadata

Data product name

DpdNirStackedFrameCatalog

Data product custodian

NIR

Name of the Schema file

euc-nir-StackedFrameCatalog.xsd

Last Edited for DPDD Version

1.1

Processing Element(s) creating/using the data product

Creators:

Consumers:

Processing function using the data product

  • PF-NIR

Proposed for inclusion in EAS/SAS

This product is proposed for inclusion in the SAS: yes

This is one of the main PF-NIR products and it is the catalog extracted from the NIR Stacked Frame image.

Data Product Elements

Header

object of type sys:genericHeader

Data

object of type nir:nirStackedCatalog

QualityFlags

object of type dqc:sqfPlaceHolder

Parameters

object of type ppr:genericKeyValueParameters

Detailed Description of the Data Product

The DpdNirStackedFrameCatalog is one of the output of the NIR_ProcessField_Pipeline applied to wide survey observations and in general to “scientific” images (i.e. it could be executed also on Self Calibration images).

The catalog is extracted from NIR Stacked Frame images. A single catalog is, therefore, provided at the end of each NIR_ProcessField_Pipeline run.

The DpdNirStackedFrameCatalog data product contains the link to a FITS file.

../../_images/nirStackedCatalog.png

Fig. 27 : Graphical representaton of Data section structure for DpdNirStackedFrameCatalog

The main elements inside the Data section are:

  • SpatialCoverage

  • CatalogDescription

  • SpectralCoverage

  • CatalogDescription

  • ObservationId: Observation Id of origin stacked image

  • DataStorage: Element that links to a FITS file containing the Stacked image FITS file

  • TargetPointing: Coordinates of target pointing

  • QualityParams (optional): Data Quality Parameters

    • ObjectCount: Number of object in the catalog

    • MagAper: Basic statistics for Magnitude APER extraction (mag)

    • MagAuto: Basic statistics for Magnitude AUTO extraction (mag)

    • MagPSF: Basic statistics for Magnitude PSF extraction (mag)

    • Bright: Basic statistics on errors for brighter sources

    • Faint: Basic statistics on errors for fainter sources

Scientific FITS File

The FITS type nir.stkCatalog has a structure aligned with the image from which the catalog is extracted and

Primary layer

The primary header of scientific catalog reflects basic information of staked image source of the catalog.

HDU PRIMARY: header

Name

Description

Value

Keywords

FITS_DEF

FITS name definition

string = nir.stkCatalog

FITS_VER

FITS version

string = 0.6

ID_CATA

idCatalog = Catalog identifier

integer

RA_PNT

Center of field of view right ascension (deg)

double

DEC_PNT

Center of field of view right declination (deg)

double

PA_PNT

TargetPoiting:PA Orientation of field of original view right (deg)

double

TELESCOP

string = Euclid

INSTRUME

or NISPsim for simulations

string = NISP

OBSMODE

eso:dataProduct:ThirdType DP type (WIDE, DEEP, CALIBRATION)

string

DATE_STA

DateRange:TimestampStart Observation Date first dither

string

DATE_END

DateRange:TimestampEnd Observation Date last dither

string

FILTER

Filter Filter name, e.g. NIR_J

string

OBS_ID

ObservationId Running Sequence number of the Observed block

integer

DET_SIG

Detection threshold used during catalog extraction

double

MED_BRI

Median value Gaia comparison for bright sources

double

MED_BLU

Median value Gaia comparison for blue sources

double

MED_GRE

Median value Gaia comparison for green sources

double

MED_RED

Median value Gaia comparison for red sources

double

ERR_BRI

Error on median value Gaia comparison for bright sources

double

ERR_BLU

Error on median value Gaia comparison for blue sources

double

ERR_GRE

Error on median value Gaia comparison for green sources

double

ERR_RED

Error on median value Gaia comparison for red sources

double

LDAC_OBJECTS Extension header

The FITS type nir.stkCatalog contains a binary table HDU named LDAC_OBJECTS with the next columns list

Catalog: 44 columns table

Name

Description

Unit

Format

OBJECT_ID

Unique source identifier (MER tool)

NA

FITS K

XWIN_IMAGE

Windowed position estimate along x(XWIN_IMAGE)

pixel

FITS D

YWIN_IMAGE

Windowed position estimate along y (YWIN_IMAGE)

pixel

FITS D

XWIN_WORLD

Windowed position along world x axis (XWIN_WORLD)

deg

FITS D

YWIN_WORLD

Windowed position along world y axis (YWIN_WORLD)

deg

FITS D

ALPHA_J2000

Right ascension of barycenter (J2000) (Sextractor ALPHA_J2000)

deg

FITS D

DELTA_J2000

Declination of barycenter (J2000) (Sextractor DELTA_J2000)

deg

FITS D

MAG_APER

Fixed aperture magnitude vector (Sextractor MAG_APER)

mag

FITS 5E

MAGERR_APER

RMS error vector for fixed aperture mag (Sextractor MAGERR_APER)

mag

FITS 5E

FLUX_APER

Flux vector within fixed circular aperture (Sextractor FLUX_APER)

count

FITS 5E

FLUXERR_APER

RMS error vector for aperture flux (Sextractor FLUXERR_APER)

count

FITS 5E

MAG_AUTO

Kron-like elliptical aperture magnitude (Sextractor MAG_AUTO)

mag

FITS E

MAGERR_AUTO

RMS error for AUTO magnitude (Sextractor MAGERR_AUTO)

mag

FITS E

FLUX_AUTO

Flux within a Kron-like elliptical aperture (Sextractor FLUX_AUTO)

count

FITS E

FLUXERR_AUTO

RMS error for AUTO flux (Sextractor FLUXERR_AUTO)

count

FITS E

AWIN_WORLD

Windowed profile RMS along major axis (Sextractor AWIN_WORLD)

deg

FITS E

BWIN_WORLD

Windowed profile RMS along minor axis (Sextractor BWIN_WORLD)

deg

FITS E

THETAWIN_WORLD

Windowed position angle (CCW/world-x) (Sextractor THETAWIN_WORLD)

deg

FITS E

ERRAWIN_WORLD

SWorld RMS windowed pos error along major axis (Sextractor ERRAWIN_WORLD)

deg

FITS E

ERRBWIN_WORLD

World RMS windowed pos error along minor axis (Sextractor ERRBWIN_WORLD)

deg

FITS E

ERRTHETAWIN_WORLD

Windowed error ellipse pos. angle (CCW/world-x) (Sextractor ERRTHETAWIN_WORLD)

deg

FITS E

KRON_RADIUS

Kron apertures in units of A or B (Sextractor KRON_RADIUS)

deg

FITS D

ELLIPTICITY

Source ELLIPTICITY shape parameter. 1 - B_IMAGE/A_IMAGE(Sextractor ELLIPTICITY)

NA

FITS D

CLASS_STAR

Source star class shape parameter. S/G classifier output (Sextractor CLASS_STAR)

NA

FITS E

SPREAD_MODEL

Spread parameter from model-fitting (Sextractor SPREAD_MODEL)

NA

FITS E

FWHM_IMAGE

FWHM assuming a gaussian core (Sextractor FWHM_IMAGE)

pixel

FITS E

FLUX_RADIUS

Fraction-of-light radii (Sextractor FLUX_RADIUS)

count

FITS E

BACKGROUND

Background at centroid position (Sextractor BACKGROUND)

ADU

FITS D

THRESHOLD

Detection threshold about background (Sextractor THRESHOLD)

NA

FITS D

XPSF_IMAGE

X coordinate from PSF-fitting (XPSF_IMAGE)

pixel

FITS D

YPSF_IMAGE

Y coordinate from PSF-fitting (YPSF_IMAGE)

pixel

FITS D

XPSF_WORLD

PSF position along world x axis (XPSF_WORLD)

deg

FITS D

YPSF_WORLD

PSF position along world y axis (YPSF_WORLD)

deg

FITS D

ALPHAPSF_J2000

Right ascension of the fitted PSF (J2000) (Sextractor ALPHAPSF_J2000)

deg

FITS D

DELTAPSF_J2000

Declination of the fitted PSF (J2000) (Sextractor ALPHAPSF_J2000)

deg

FITS D

MAG_PSF

Magnitude from PSF-fitting (Sextractor MAG_PSF)

mag

FITS E

MAGERR_PSF

RMS magnitude error from PSF-fitting (Sextractor MAGERR_PSF)

mag

FITS E

FLUX_PSF

Flux from PSF-fitting (Sextractor FLUX_PSF)

count

FITS E

FLUXERR_PSF

RMS flux error for PSF-fitting (Sextractor FLUXERR_PSF)

count

FITS E

ERRAPSF_IMAGE

PSF RMS position error along major axis (Sextractor ERRAPSF_IMAGE)

pixel

FITS E

ERRBPSF_IMAGE

PSF RMS position error along minor axis (Sextractor ERRBPSF_IMAGE)

pixel

FITS E

ERRTHETAPSF_IMAGE

PSF error ellipse position angle (CCW/x) (Sextractor ERRTHETAPSF_IMAGE)

deg

FITS E

CHI2_PSF

Reduced chi2 from PSF-fitting (Sextractor CHI2_PSF)

NA

FITS E

FLAGS

SExtractor Extraction flags (Sextractor FLAGS)

NA

FITS I