.. _VisPSFModel: ===================== Vis PSF Model Product ===================== Metadata ______________________ +------------------------------------------------+----------------------------------------------------------------------------------------------+ | Data product name | DpdVisPSFModel | +------------------------------------------------+----------------------------------------------------------------------------------------------+ | Data product custodian | VIS | +------------------------------------------------+----------------------------------------------------------------------------------------------+ | Name of the Schema file | .. raw:: html | | | | | | `euc-vis-PSFModel.xsd `_ | +------------------------------------------------+----------------------------------------------------------------------------------------------+ | Processing Element(s) creating/using the data | VIS | | product | | +------------------------------------------------+----------------------------------------------------------------------------------------------+ | Processing function using the data product | VIS and MER | +------------------------------------------------+----------------------------------------------------------------------------------------------+ Proposed for inclusion in EAS/SAS ========================================== .. PFUsingStart Yes .. PFUsingEnd Data product elements ===================== +--------------+----------------------------------------------+ | Header | object of type sys:genericHeader | +--------------+----------------------------------------------+ | Data | object of type vis:visPSFModel | +--------------+----------------------------------------------+ | QualityFlags | object of type dqc:sqfPlaceHolder | +--------------+----------------------------------------------+ | Parameters | object of type ppr:genericKeyValueParameters | +--------------+----------------------------------------------+ Detailed description of the data product ======================================== .. DetailedDescStart This model refers to the PSF grid (.fits) and PSF Model (.psf) data output by PSFex (Bertin 2011). PSF is quadrant-based. This means that each file has 144 extensions. The grid file refers to the check image snapshot. It is computed on a dense stellar field observation (PV023) and is montly checked and/or updated with F-001 selfcal visits. In DR1 the PSF model is the same for all the time periods. It is known that the model in DR1 is not optimal because it is not BFE corrected. This is the model used to calculate the spread model in the :ref:`DpdVisCalibratedFrameCatalog`. The PSF model is delivered with all calibrated frame. PSF model ********* **Name of file:** ``EUC_VIS_MDL-PSF-000-000000-0000000__[YYYYMMDDThhmmss.s]Z.psf`` where the date is the production date. Primary header: ============ ========================================================= SIMPLE This is a FITS file BITPIX NAXIS EXTEND This file may contain FITS extensions ============ ========================================================= Extension header: ============ ========================================================= XTENSION THIS IS A BINARY TABLE (FROM THE LDACTOOLS) BITPIX NAXIS NAXIS1 BYTES PER ROW NAXIS2 NUMBER OF ROWS PCOUNT RANDOM PARAMETER COUNT GCOUNT GROUP COUNT TFIELDS FIELDS PER ROWS EXTNAME TABLE NAME LOADED Number of loaded sources ACCEPTED Number of accepted sources CHI2 Final reduced chi2 POLNAXIS Number of context parameters POLGRP1 Polynom group for this context parameter POLNAME1 Name of this context parameter POLZERO1 Offset value for this context parameter POLSCAL1 Scale value for this context parameter POLGRP2 Polynom group for this context parameter POLNAME2 Name of this context parameter POLZERO2 Offset value for this context parameter POLSCAL2 Scale value for this context parameter POLNGRP Number of context groups POLDEG1 Polynom degree for this context group PSF_FWHM PSF FWHM in image pixels PSF_SAMP Sampling step of the PSF data in image pixels PSFNAXIS Dimensionality of the PSF data PSFAXIS1 Number of element along this axis PSFAXIS2 Number of element along this axis PSFAXIS3 Number of element along this axis TTYPE1 Tabulated PSF data TFORM1 TDIM1 TTYPE2 PSF basis vector coefficients TFORM2 TDIM2 ORIEXTNM ============ ========================================================= PSF grid ******** **Name of file:** ``EUC_VIS_GRD-PSF-000-000000-0000000__[YYYYMMDDThhmmss.s]Z.psf`` where the date is the production date. Primary header: ============ ========================================================= SIMPLE This is a FITS file BITPIX NAXIS EXTEND This file may contain FITS extensions NEXTEND Number of extensions ============ ========================================================= Extension header: ============ ========================================================= XTENSION THIS IS A BINARY TABLE (FROM THE LDACTOOLS) BITPIX NAXIS NAXIS1 BYTES PER ROW NAXIS2 NUMBER OF ROWS PCOUNT RANDOM PARAMETER COUNT GCOUNT GROUP COUNT TFIELDS FIELDS PER ROWS EXTNAME TABLE NAME CD1_1 pixel scale in deg CD1_2 pixel scale in deg CD2_1 pixel scale in deg CD2_2 pixel scale in deg PSF_SAMP Sampling step of the PSF data TELESCOP INSTRUME PIXSIZE pixel size in microns ECPSIZE nominal Euclid pixel size in microns OVERSAMP oversampling factor for this PSF ============ ========================================================= .. DetailedDescEnd