.. _VisStarMask:

=====================  
Vis Star Mask Product
=====================

Metadata
______________________

+------------------------------------------------+----------------------------------------------------------------------------------------------+
| Data product name                              | DpdVisStarMask                                                                               |
+------------------------------------------------+----------------------------------------------------------------------------------------------+
| Data product custodian                         | VIS                                                                                          |
+------------------------------------------------+----------------------------------------------------------------------------------------------+
| Name of the Schema file                        | .. raw:: html                                                                                |
|                                                |                                                                                              |
|                                                | `euc-vis-StarMask.xsd <https://gitlab.euclid-sgs.uk/ST-DM/ST_DataModel/-/blob/10.1.2/ST_DM_S |
|                                                | chema/auxdir/ST_DM_Schema/dpd/vis/euc-vis-StarMask.xsd>`_                                    |
+------------------------------------------------+----------------------------------------------------------------------------------------------+
| Processing Element(s) creating/using the data  | Star Mask                                                                                    |
| product                                        |                                                                                              |
+------------------------------------------------+----------------------------------------------------------------------------------------------+
| Processing function using the data product     | VIS                                                                                          |
+------------------------------------------------+----------------------------------------------------------------------------------------------+

Proposed for inclusion in EAS/SAS
==========================================
.. PFUsingStart

Yes

.. PFUsingEnd

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
========================================
.. DetailedDescStart

Data product definition referencing a FITS file containing a saturated star PSF. 
It is used to (very) roughly identify star pixels in the flagmap of a VIS exposure. 
It is just used as an indication of where stars signal is located.

It is a broadband 'fat' PSF used to flag star shapes during ghost flagging processing to try to separate star signal from ghost signal.

Data header
-----------

============ ================================
SIMPLE           conforms to FITS standard
BITPIX                array data type
NAXIS            number of array dimensions
NAXIS1                   
NAXIS2                   
EXTEND  
============ ================================

.. DetailedDescEnd