.. index:: Photometric small-scale flat (NISP)
   
.. _calobs-nisp-phot-small-scale-flats:

**CALPRODUCT-NP-009:** NISP-P Small-Scale Flat
==============================================

.. include:: definitions.rst

Parent requirement
------------------
| `R-CAL-B-NP-1110 <https://wiki.cosmos.esa.int/euclid/images/1/1d/EUC-MPIA-RD-1-001_CalCD-B_v3.1.pdf#page=31>`_
| `R-CAL-B-NP-1120 <https://wiki.cosmos.esa.int/euclid/images/1/1d/EUC-MPIA-RD-1-001_CalCD-B_v3.1.pdf#page=31>`_


Scheduling
----------
Monthly

Time-critical
-------------
No

Objective
---------
Reconstruct matching broad-band small-scale flat fields for the YJH filters from the :ref:`calobs-nisp-led-flats`, using the ground-based quantum efficiency maps. 

Fulfilled by
------------

:ref:`calobs-block-pv-nisp-LED`

:ref:`calobs-block-f-visNL-nispLED`


Data volume
-----------
TBD

Processing input
----------------
:command:`Ground Processing Input Data`: BPM, ground-based QE

:command:`Data Description`: Flat-field and QE cubes


Processing output
-----------------
Effective flat fields for the YJH filters. Trend analysis

Required accuracy, constraints
------------------------------
Expected flux levels within TBD%, stable within TBD%, spatial irradiance as expected (within requirement, ground-based measurements)

Processing tools
----------------
L1 small scale flat pipeline, trending statistics, offline analysis for trapping/de-trapping, persistence

Validation
----------

TBD
   
Recovery
--------

TBD

Quality control parameters
--------------------------
DataModel:
`<https://gitlab.euclid-sgs.uk/>`_

Contact person
--------------
NISP-P calibration scientist  

.. raw:: latex

   \clearpage