.. _DESBiasFrame:

Bias Frame Product
------------------

Data product name
=================
.. DataProductNameStart

`DpdExtDesBiasFrame <https://gitlab.euclid-sgs.uk/ST-DM/ST_DataModel/blob/9.0.2/ST_DM_Schema/auxdir/ST_DM_Schema/dpd/ext/des/euc-test-ext-des-BiasFrame.xsd#L20-26>`__

.. DataProductNameEnd

Data product custodian
======================
.. DataProductCustodianStart

`OU-EXT <https://euclid.roe.ac.uk/projects/sgu/wiki>`_

.. DataProductCustodianEnd

Data model tag
==============
.. DataModelTagStart

9.0.2

.. DataModelTagEnd

Name of the Schema file
=======================
.. NameSchemaStart

`euc-test-ext-des-BiasFrame.xsd <https://gitlab.euclid-sgs.uk/ST-DM/ST_DataModel/blob/9.0.2/ST_DM_Schema/auxdir/ST_DM_Schema/dpd/ext/des/euc-test-ext-des-BiasFrame.xsd>`__

.. NameSchemaEnd

Schema documentation tag
========================
.. SchemaDocTagStart

.. SchemaDocTagEnd

Data product elements
=====================
.. DataProductElementsStart

`Header <https://gitlab.euclid-sgs.uk/ST-DM/ST_DataModel/blob/9.0.2/ST_DM_Schema/auxdir/ST_DM_Schema/dpd/ext/des/euc-test-ext-des-BiasFrame.xsd#L30-30>`__ of type: sys:genericHeader

`Data <https://gitlab.euclid-sgs.uk/ST-DM/ST_DataModel/blob/9.0.2/ST_DM_Schema/auxdir/ST_DM_Schema/dpd/ext/des/euc-test-ext-des-BiasFrame.xsd#L31-31>`__ of type: des:desBiasExposure

`QualityFlags <https://gitlab.euclid-sgs.uk/ST-DM/ST_DataModel/blob/9.0.2/ST_DM_Schema/auxdir/ST_DM_Schema/dpd/ext/des/euc-test-ext-des-BiasFrame.xsd#L32-32>`__ of type: dqc:sqfPlaceHolder

`Parameters <https://gitlab.euclid-sgs.uk/ST-DM/ST_DataModel/blob/9.0.2/ST_DM_Schema/auxdir/ST_DM_Schema/dpd/ext/des/euc-test-ext-des-BiasFrame.xsd#L33-33>`__ of type: ppr:genericKeyValueParameters


.. DataProductElementsEnd

Processing Element(s) creating/using the data product
=====================================================
.. PECreatorStart

.. PECreatorEnd

Processing function using the data product
==========================================
.. PFUsingStart

EXT-DES

.. PFUsingEnd

Detailed description of the data product
========================================
.. DetailedDescStart

Also known as **bias exposure** in DES terminology. This is an input product to the 
DES pipeline. It contains 70 extensions (one for each DECam CCD) with the data of a 
single bias exposure.

The main elements inside this product are:

* **Observation**: Contains information about the telescope pointing (Telra, Teldec, 
  HourAngle, ZenithDistance, Epoch), the observation night and date, and the optical 
  air mass.
* **Saturate**: Global saturation threshold valid for amplifiers A and B.
* **DataStorage**: Element that links to a FITS file containing the bias exposure image
  dataset.

.. include:: ../../fit/fit.ext.des.biasExposure.rst

.. DetailedDescEnd