.. _VisNonLinearityCorrection:
  
Vis Non Linearity Correction Product
------------------------------------

Metadata
______________________

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

.. warning:: 

    Model depreciated, replaced by :ref:`VisNonLinearityModel`

Data product definition referencing a JSON file containing a dictionary with one itme per quadrant. There are currently two different non-linearity correction formats. Either a up to 5th order polynomial which converts the non-linear signal to a linear signal, or a series of points pairing a linear signal value with its corresponding non-linear signal. Both formats can't be mixed in the same product.

.. DetailedDescEnd