.. _NIRMasterDark:
  
NIR Master Dark
-------------------
  
Data product name
=================
.. DataProductNameStart
   
MasterDark
   
.. DataProductNameEnd
   
Data product custodian
======================
.. DataProductCustodianStart
   
NIR
   
.. DataProductCustodianEnd
   
Data model tag
==============
.. DataModelTagStart
   
R-1.6.7
   
.. DataModelTagEnd
   
Name of the Schema file
=======================
.. NameSchemaStart
   
euc-test-nir-MasterDark.xsd
   
.. NameSchemaEnd
   
Schema documentation tag
========================
.. SchemaDocTagStart
   
:emphasis:`Documentation for data product element DpdNirMasterDarkFrame:`

Master dark frame to be used to subtract dark current from science frame.
   
.. SchemaDocTagEnd
   
Data product elements
=====================
.. DataProductElementsStart
   
Header of type: sys:genericHeader

Data of type: nir:nirMasterDarkFrame

Parameters of type: ppr:genericKeyValueParameters

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

It is created by a calibration pipeline which combines
dark frames taken at the end of each science sequence as well as dedicated dark frames to create a master dark
for each set of science data (filter, observing mode, etc.).

It is used by NIR_DarkBiasSubtraction PE.

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

This is an internal NIR data product, and it is used only by the NIR PF.

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

The structure of the NIR Master Dark is the same as the Science Image of the :ref:`NIRCalibratedFrame` with 16 x 3 layers, i.e. containing
median dark current, RMS, and Data Quality flags for each detector.

A master dark frame for each observing mode and filter is foreseen. In addition, a set of metadata is used to describe the validity range,
the time interval and the list of raw dark frames used to generate the master dark, the temperature of the focal plane.

.. DetailedDescEnd