.. _shepsfimage: Shear PSF Model Image --------------------- Metadata ______________________ +------------------------------------------------+----------------------------------------------------------------------------------------------+ | Data product name | DpdShePsfModelImage | +------------------------------------------------+----------------------------------------------------------------------------------------------+ | Data product custodian | SHE | +------------------------------------------------+----------------------------------------------------------------------------------------------+ | Name of the Schema file | .. raw:: html | | | | | | `euc-she-PsfModelImage.xsd `_ | +------------------------------------------------+----------------------------------------------------------------------------------------------+ | Processing Element(s) creating/using the data | **Creators:** | | product | | | | * SHE_PSFToolkit_ModelPSFs | | | | | | **Consumers:** | | | | | | * SHE_LensMC_EstimateShear | | | * SHE_MetaCal_EstimateShear | +------------------------------------------------+----------------------------------------------------------------------------------------------+ | Processing function using the data product | SHE | +------------------------------------------------+----------------------------------------------------------------------------------------------+ | Proposed for inclusion in EAS/SAS | This product is proposed for inclusion in the SAS: no | +------------------------------------------------+----------------------------------------------------------------------------------------------+ Detailed description of the data product ======================================== .. DetailedDescStart Data product containing a per-object broadband PSF, as output of the SHE_PSFToolkit software, for a catalogue of sources. Stores each PSF image as a FITS file containing 3 HDUs NxN array (size set by user on runtime), as well as meta-data linking to object in question. The FITS file is in an XML container, which also stores the ExposureProductID and ObservationID linking to the VIS input file that the postage stamp is created from. The pixel size is set by the user. The FITS output file will contain the following information: **HDUs** #. "Primary": Header only HDU #. "PSFC": Catalogue containing additional information for PSF determination for object For each PSF defined in the PSFC there are the following HDUs #. "BPSF": Bulge PSF images (as postage stamps) #. "DPSF": Disk PSF images (as postage stamps) *Primary* _________ .. table:: :width: 100% +---------------------------------------------------------------------------------+ | **HDU** *PRIMARY*: header | +==========+==========+==============================+============================+ | | **Name** | **Description** | **Value** | +----------+----------+------------------------------+----------------------------+ | Keywords | FITS_VER | Table format version number | string = 8.0 | + +----------+------------------------------+----------------------------+ | | FITS_DEF | Table format label | string = she.psfModelImage | + +----------+------------------------------+----------------------------+ | | 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 | +----------+----------+------------------------------+----------------------------+ *PSFC* ______ A catalogue of the model PSFs contained within the product. This contains the OBJECT_ID, HDU indices of the disk and bulge PSFs, positional information for both the VIS image and the PSF cutout, and some statistical information about the PSF model. .. table:: :width: 100% +---------------------------------------------------------------------------------------------------------------------------------------------+ | **HDU** *ShePsfC*: header | +===========+===========+========================================================================+============================================+ | | **Name** | **Description** | **Value** | +-----------+-----------+------------------------------------------------------------------------+--------------------------------------------+ | Keywords | FITS_VER | Table format version number | string = 8.0 | + +-----------+------------------------------------------------------------------------+--------------------------------------------+ | | FITS_DEF | Table format label | string = she.psfModelImage.ShePsfC | + +-----------+------------------------------------------------------------------------+--------------------------------------------+ | | CAL_PROD | ProductId identifying the PSF calibration data product used | string | + +-----------+------------------------------------------------------------------------+--------------------------------------------+ | | CAL_TIME | Timestamp identifying the PSF calibration data product used | string | + +-----------+------------------------------------------------------------------------+--------------------------------------------+ | | FLD_TIME | Timestamp identifying the PSF field param data product used | string | + +-----------+------------------------------------------------------------------------+--------------------------------------------+ | | FLD_PROD | ProductId identifying the PSF field data product used | string | +-----------+-----------+------------------------------------------------------------------------+--------------------------------------------+ .. table:: :width: 100% +---------------------------------------------------------------------------------------------------------------------------------------------+ | **HDU** *ShePsfC*: 18 columns table | +=========+========================+==================================================================================+==========+============+ | | **Name** | **Description** | **Unit** | **Format** | +---------+------------------------+----------------------------------------------------------------------------------+----------+------------+ | Columns | OBJECT_ID | Identifier for object for which PSF was requested | NA | FITS *K* | + +------------------------+----------------------------------------------------------------------------------+----------+------------+ | | SHE_PSF_SED_TEMPLATE | Identifiers for templates used in construction of the PSF | NA | FITS *K* | + +------------------------+----------------------------------------------------------------------------------+----------+------------+ | | SHE_PSF_BULGE_INDEX | Index of the HDU containing the bulge PSF iamge for this object | NA | FITS *J* | + +------------------------+----------------------------------------------------------------------------------+----------+------------+ | | SHE_PSF_DISK_INDEX | Index of the HDU containing the disk PSF iamge for this object | NA | FITS *J* | + +------------------------+----------------------------------------------------------------------------------+----------+------------+ | | SHE_PSF_IMAGE_X | X co-ordinate of the postage stamp on the exposure | NA | FITS *I* | + +------------------------+----------------------------------------------------------------------------------+----------+------------+ | | SHE_PSF_IMAGE_Y | Y co-ordinate of the postage stamp on the exposure | NA | FITS *I* | + +------------------------+----------------------------------------------------------------------------------+----------+------------+ | | SHE_PSF_X | X co-ordinate of the centre of the PSF on the postage stamp (includes sub pixel) | NA | FITS *E* | + +------------------------+----------------------------------------------------------------------------------+----------+------------+ | | SHE_PSF_Y | Y co-ordinate of the centre of the PSF on the postage stamp (includes sub pixel) | NA | FITS *E* | + +------------------------+----------------------------------------------------------------------------------+----------+------------+ | | SHE_PSF_CALIB_TIME | Timestamp identifying the PSF calibration data product used | NA | FITS *20A* | + +------------------------+----------------------------------------------------------------------------------+----------+------------+ | | SHE_PSF_FIELD_TIME | Timestamp identifying the PSF field param data product used | NA | FITS *20A* | + +------------------------+----------------------------------------------------------------------------------+----------+------------+ | | SHE_PSF_QUAL_FLAG | Flag indicating whether PSF is of sufficient quality for shear analysis | NA | FITS *J* | + +------------------------+----------------------------------------------------------------------------------+----------+------------+ | | SHE_PSF_CHI1_IMAGE | First moment of PSF ellipticity (using chi) in x-image coordinate / pixels | NA | FITS *E* | + +------------------------+----------------------------------------------------------------------------------+----------+------------+ | | SHE_PSF_CHI2_IMAGE | First moment of PSF ellipticity (using chi) in y-image coordinate / pixels | NA | FITS *E* | + +------------------------+----------------------------------------------------------------------------------+----------+------------+ | | SHE_PSF_R2 | Quadrupole moment (Mxx|Myy) measure of PSF area / arcsec**2 | NA | FITS *E* | + +------------------------+----------------------------------------------------------------------------------+----------+------------+ | | SHE_PSF_STREHL | Strehl ratio of PSF | NA | FITS *E* | + +------------------------+----------------------------------------------------------------------------------+----------+------------+ | | SHE_PSF_CHI1_IMAGE_ERR | 1-sigma error on first moment of PSF ellipticity in x-image coordinate / pixels | NA | FITS *E* | + +------------------------+----------------------------------------------------------------------------------+----------+------------+ | | SHE_PSF_CHI2_IMAGE_ERR | 1-sigma error on first moment of PSF ellipticity in y-image coordinate / pixels | NA | FITS *E* | + +------------------------+----------------------------------------------------------------------------------+----------+------------+ | | SHE_PSF_R2_ERR | 1-sigma error on quadrupole moment measure of PSF area / arcsec**2 | NA | FITS *E* | +---------+------------------------+----------------------------------------------------------------------------------+----------+------------+ *BPSF* ______ (Postage Stamp) Image of PSF for bulge of object. .. table:: :width: 100% +-------------------------------------------------------------------------------------+ | **HDU** *BPSF*: header | +==========+==========+=============================+=================================+ | | **Name** | **Description** | **Value** | +----------+----------+-----------------------------+---------------------------------+ | Keywords | FITS_VER | Table format version number | string = 8.0 | + +----------+-----------------------------+---------------------------------+ | | FITS_DEF | Table format label | string = she.psfModelImage.BPSF | + +----------+-----------------------------+---------------------------------+ | | BITPIX | | integer | + +----------+-----------------------------+---------------------------------+ | | NAXIS | | integer | + +----------+-----------------------------+---------------------------------+ | | NAXIS1 | | integer | + +----------+-----------------------------+---------------------------------+ | | NAXIS2 | | integer | + +----------+-----------------------------+---------------------------------+ | | EXTEND | | logical | + +----------+-----------------------------+---------------------------------+ | | PIXSCALE | | double | +----------+----------+-----------------------------+---------------------------------+ .. table:: :width: 100% +-------------------------------------------------------------------------------------+ | **HDU** *BPSF*: 1 array info | +===============+================+====================================+===============+ | | **Format** | **Number of Dimensions** | **Unit** | +---------------+----------------+------------------------------------+---------------+ | ArrayInfo | -32 | 2 | NA | +---------------+----------------+------------------------------------+---------------+ .. table:: :width: 100% +-------------------------------------------------------------------------------------+ | **HDU** *BPSF*: 2 array axes | +============+============+================================+============+=============+ | | **Name** | **Projection Algorithm** | **Type** | **Unit** | +------------+------------+--------------------------------+------------+-------------+ | AxesList | RA | TAN | RA | deg | + +------------+--------------------------------+------------+-------------+ | | DEC | TAN | DEC | deg | +------------+------------+--------------------------------+------------+-------------+ *DPSF* ______ As *BPSF*, for the disk of the object. .. table:: :width: 100% +-------------------------------------------------------------------------------------+ | **HDU** *DPSF*: header | +==========+==========+=============================+=================================+ | | **Name** | **Description** | **Value** | +----------+----------+-----------------------------+---------------------------------+ | Keywords | FITS_VER | Table format version number | string = 8.0 | + +----------+-----------------------------+---------------------------------+ | | FITS_DEF | Table format label | string = she.psfModelImage.DPSF | + +----------+-----------------------------+---------------------------------+ | | BITPIX | | integer | + +----------+-----------------------------+---------------------------------+ | | NAXIS | | integer | + +----------+-----------------------------+---------------------------------+ | | NAXIS1 | | integer | + +----------+-----------------------------+---------------------------------+ | | NAXIS2 | | integer | + +----------+-----------------------------+---------------------------------+ | | EXTEND | | logical | + +----------+-----------------------------+---------------------------------+ | | PIXSCALE | | double | +----------+----------+-----------------------------+---------------------------------+ .. table:: :width: 100% +-------------------------------------------------------------------------------------+ | **HDU** *DPSF*: 1 array info | +===============+================+====================================+===============+ | | **Format** | **Number of Dimensions** | **Unit** | +---------------+----------------+------------------------------------+---------------+ | ArrayInfo | -32 | 2 | NA | +---------------+----------------+------------------------------------+---------------+ .. table:: :width: 100% +-------------------------------------------------------------------------------------+ | **HDU** *DPSF*: 2 array axes | +============+============+================================+============+=============+ | | **Name** | **Projection Algorithm** | **Type** | **Unit** | +------------+------------+--------------------------------+------------+-------------+ | AxesList | RA | TAN | RA | deg | + +------------+--------------------------------+------------+-------------+ | | DEC | TAN | DEC | deg | +------------+------------+--------------------------------+------------+-------------+ .. DetailedDescEnd