Vis Diffraction Spikes Focus Product¶

Metadata¶

Data product name	DpdVisDiffractionSpikesFocus
Data product custodian	VIS
Name of the Schema file	euc-vis-DiffractionSpikesFocus.xsd
Processing Element(s) creating/using the data product	DiffractionSpikesFocus
Processing function using the data product	VIS

Proposed for inclusion in EAS/SAS¶

Yes

Data product elements¶

Header	object of type sys:genericHeader
Data	object of type vis:visFileContainerData
QualityFlags	object of type dqc:sqfPlaceHolder
Parameters	object of type ppr:genericKeyValueParameters

Detailed description of the data product¶

Data product definition referencing of a FITS table containing the results of the Euclid telescope focus value fit on one VIS exposure. A unique table summarises the results of the focus measurement in the FPA. Each line in the table contains the coordinates of the sources, the measurement and the associated error.

A DQC file in JSON format is associated with the final results. The final focus measurement corresponds to the key: “mean ADS z-axis focus”.

DQC contant¶

Name of file:

EUC_VIS_SPIKESFOCUS-DQC-[ObsId]-[Dither]-[exposure]-0000000__[YYYYMMDDThhmmss.s]Z.json

where the date is the production date.

The file contains the following keys:

“DpdVisCalibratedFrame.Id”
“DpdVisRawFrame.Id”
“ObservationDateTime”
“ExposureTime”
“ObservationId”
“DitherNum”
“ExposureNum”
“FieldId”
“PointingId”
“CalblockId”
“CalblockVariant”
“CommandedFPAPointing.RA”
“CommandedFPAPointing.Dec”
“CommandedFPAPointing.PA”
“ReconsFPAPointing.RA”
“ReconsFPAPointing.Dec”
“ReconsFPAPointing.PA”
“EUC_VIS_SPIKESFOCUS_fits”
“success”
“total fits”
“outliers”
“mean ADS z-axis focus”
“focus error”
“focus unit”
“WFE rms”
“WFE unit”
“alpha_angle”
“beta_angle”
“solar_aspect_angle”
“DETTEMP_min”
“DETTEMP_max”
“DETTEMP_avg”
“ROETEMP_min”
“ROETEMP_max”
“ROETEMP_avg”

Fits header¶

Name of file:

EUC_VIS_SPIKESFOCUS-[ObsId]-[Dither]-[exposure]-0000000__[YYYYMMDDThhmmss.s]Z.fits

where the date is the production date.

Primary header:

SIMPLE	conforms to FITS standard
BITPIX	array data type
NAXIS	number of array dimensions
EXTEND

Extension header:

XTENSION	binary table extension
BITPIX	array data type
NAXIS	number of array dimensions
NAXIS1	length of dimension 1
NAXIS2	length of dimension 2
PCOUNT	number of group parameters
GCOUNT	number of groups
TFIELDS	number of table fields
TTYPE1	CCD
TFORM1	9A
TTYPE2	x
TFORM2	D
TTYPE3	y
TFORM3	D
TTYPE4	maxamp
TFORM4	D
TTYPE5	minchisq
TFORM5	D
TTYPE6	focus
TFORM6	D
TTYPE7	error
TFORM7	D
TTYPE8	flag
TFORM8	L
M2_FOCUS
M2_ERROR
RMS_WFE
SUCCESS