.. _DESMasterFlatFrame:

Master Flat Frame Product
-------------------------

Metadata
______________________

+------------------------------------------------+----------------------------------------------------------------------------------------------+
| Data product name                              | `DpdExtDesMasterFlatFrame <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-MasterFlatFrame.xsd#L20-26>`__       |
+------------------------------------------------+----------------------------------------------------------------------------------------------+
| Data product custodian                         | `OU-EXT <https://euclid.roe.ac.uk/projects/sgu/wiki>`_                                       |
+------------------------------------------------+----------------------------------------------------------------------------------------------+
| Name of the Schema file                        | `euc-test-ext-des-MasterFlatFrame.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-MasterFlatFrame.xsd>`__  |
+------------------------------------------------+----------------------------------------------------------------------------------------------+
| Processing Element(s) creating/using the data  |                                                                                              |
| product                                        |                                                                                              |
+------------------------------------------------+----------------------------------------------------------------------------------------------+
| Processing function using the data product     | EXT-DES                                                                                      |
+------------------------------------------------+----------------------------------------------------------------------------------------------+

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

Also known as **flatcor image** in DES terminology. This product is the result of
applying the DES *flatcor* pipeline to a set of DES :ref:`DESFlatFrame`\s (flat
exposures). It contains the master flat dataset of a single CCD.

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.
* **Filter**: The DECam filter name (DECAM_g, DECAM_r, DECAM_i, DECAM_z or DECAM_Y).
* **CCDNumber**: The DECam science CCD number (1 to 62).
* **DataStorage**: Element that links to a FITS file containing the CCD master flat
  image dataset.
* **RunInformation**: Information about the processing run (Project and RunNumber).
* **ProcessingSteps** (optional): Information about the processing steps associated
  with the *flatcor* process.

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

.. DetailedDescEnd