Stacked Frame Product

Data product name

DpdExtDesStackedFrame

Data product custodian

OU-EXT

Data model tag

9.0.2

Name of the Schema file

euc-test-ext-des-StackedFrame.xsd

Schema documentation tag

Data product elements

Header of type: sys:genericHeader

Data of type: des:desCoadd

QualityFlags of type: dqc:sqfPlaceHolder

Parameters of type: ppr:genericKeyValueParameters

Processing Element(s) creating/using the data product

Processing function using the data product

EXT-DES, MER

Detailed description of the data product

Also known as coadd in DES terminology. This product is the result of applying the DES coadd pipeline to a set of DES Calibrated Frame Products (single epoch images).

The main elements inside this product are:

• Instrument: The instrument name (DECam) and telescope name (NOAO).

• Filter: The DECam filter name (DECAM_g, DECAM_r, DECAM_i, DECAM_z or DECAM_Y).

• WCS: The image astrometric parameters with linear (e.g., CTYPE1, CRVAL2, CRPIX1, CD1_1) and, optionally, non linear terms (PV1_0, PV2_0, …).

• ZeroPoint: The photometric reference zero point in magnitude units.

• ImgSpatialFootprint (optional): The spatial footprint of the image either in a serie of vertex or a bounding box.

• Masks (optional): Euclid bit masks present in the flag image dataset.

• Saturate: Global saturation threshold valid for amplifiers A and B.

• Scamp: Information about the Scamp processing.

• DataStorage: Element that links to a FITS file containing the coadd image, flag and weight datasets.

• PsfModelStorage: Element that links to a FITS file containing the coadd PSF model.

• RunInformation: Information about the processing run (Project and RunNumber).

• ProcessingSteps (optional): Information about the processing steps associated with the coadd process.

FitsFormat id: ext.des.coadd

Table 40 ArrayHDU - name: PRIMARY

Header Item	Type	Comment
SIMPLE	Logical
BITPIX	Integer
NAXIS	Integer
NAXIS1	Integer
NAXIS2	Integer
EXTEND	Logical
EQUINOX	Double
MJD-OBS	Double
RADESYS	String
CTYPE1	String
CUNIT1	String
CRVAL1	Double
CRPIX1	Double
CD1_1	Double
CD1_2	Double
CTYPE2	String
CUNIT2	String
CRVAL2	Double
CRPIX2	Double
CD2_1	Double
CD2_2	Double
EXPTIME	Double
GAIN	Double
SATURATE	Double
SOFTNAME	String
SOFTVERS	String
SOFTDATE	String
SOFTAUTH	String
SOFTINST	String
AUTHOR	Undefined
ORIGIN	String
DATE	String
COMBINET	String
RESAMPT1	String
CENTERT1	String
PSCALET1	String
RESAMPT2	String
CENTERT2	String
PSCALET2	String
FILTER	String
SEXMGZPT	Double
CHECKSUM	String
DATASUM	String

ArrayInfo - format: -32, numberOfDimensions: 2, unit:

WCS - name: Primary, identifier:

Table 41 AxesList

Name	Type	Unit	ProjectionAlgorithm
RA	RA	deg	TAN
DEC	DEC	deg	TAN

Table 42 ArrayHDU - name:

Header Item	Type	Comment
XTENSION	String
BITPIX	Integer
NAXIS	Integer
NAXIS1	Integer
NAXIS2	Integer
PCOUNT	Integer
GCOUNT	Integer
CHECKSUM	String
DATASUM	String

ArrayInfo - format: -32, numberOfDimensions: 2, unit:

WCS - name: Primary, identifier:

Table 43 AxesList

Name	Type	Unit	ProjectionAlgorithm

Table 44 ArrayHDU - name:

Header Item	Type	Comment
XTENSION	String
BITPIX	Integer
NAXIS	Integer
NAXIS1	Integer
NAXIS2	Integer
PCOUNT	Integer
GCOUNT	Integer
EQUINOX	Double
MJD-OBS	Double
RADESYS	String
CTYPE1	String
CUNIT1	String
CRVAL1	Double
CRPIX1	Double
CD1_1	Double
CD1_2	Double
CTYPE2	String
CUNIT2	String
CRVAL2	Double
CRPIX2	Double
CD2_1	Double
CD2_2	Double
EXPTIME	Double
GAIN	Double
SATURATE	Double
SOFTNAME	String
SOFTVERS	String
SOFTDATE	String
SOFTAUTH	String
SOFTINST	String
AUTHOR	Undefined
ORIGIN	String
DATE	String
COMBINET	String
RESAMPT1	String
CENTERT1	String
PSCALET1	String
RESAMPT2	String
CENTERT2	String
PSCALET2	String
CHECKSUM	String
DATASUM	String

ArrayInfo - format: -32, numberOfDimensions: 2, unit:

WCS - name: Primary, identifier:

Table 45 AxesList

Name	Type	Unit	ProjectionAlgorithm
RA	RA	deg	TAN
DEC	DEC	deg	TAN

Table 46 ArrayHDU - name:

Header Item	Type	Comment
XTENSION	String
BITPIX	Integer
NAXIS	Integer
NAXIS1	Integer
NAXIS2	Integer
PCOUNT	Integer
GCOUNT	Integer
CHECKSUM	String
DATASUM	String

ArrayInfo - format: -32, numberOfDimensions: 2, unit:

WCS - name: Primary, identifier:

Table 47 AxesList

Name	Type	Unit	ProjectionAlgorithm