.. index:: CTI-induced covariance; Calibration observations
   
.. _calobs-vis-cti-covariance:

**CALPRODUCT-VS-026:** VIS CTI-induced covariance
=================================================

.. include:: definitions.rst

Parent requirement
------------------
Not in the `CalCD-B <https://wiki.cosmos.esa.int/euclid/images/1/1d/EUC-MPIA-RD-1-001_CalCD-B_v3.1.pdf>`_

Time-critical
-------------

No.

Objective
---------

Obtain the CTI-induced covariance map.

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

:ref:`calobs-block-pv-vis-cti-covariance`

Processing input
----------------
:command:`Ground Processing Input Data`:

:command:`Data Description`: 

Required accuracy, constraints
------------------------------
| `R-CAL-B-VS-4351 <https://wiki.cosmos.esa.int/euclid/images/1/1d/EUC-MPIA-RD-1-001_CalCD-B_v3.1.pdf#page=149>`_
| `R-CAL-B-VS-4354 <https://wiki.cosmos.esa.int/euclid/images/1/1d/EUC-MPIA-RD-1-001_CalCD-B_v3.1.pdf#page=149>`_
| `R-CAL-B-VS-4355 <https://wiki.cosmos.esa.int/euclid/images/1/1d/EUC-MPIA-RD-1-001_CalCD-B_v3.1.pdf#page=149>`_
| `R-CAL-B-VS-4356 <https://wiki.cosmos.esa.int/euclid/images/1/1d/EUC-MPIA-RD-1-001_CalCD-B_v3.1.pdf#page=149>`_
| `R-CAL-B-VS-4358 <https://wiki.cosmos.esa.int/euclid/images/1/1d/EUC-MPIA-RD-1-001_CalCD-B_v3.1.pdf#page=149>`_

The CTI model used to correct CTI in the VIS detectors must correct CTI to better than :math:`4.0\times10^{-3}` (TBC).

Processing tools
----------------
VIS_CTI PE

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

Contact person
--------------
VIS instrument scientist  

.. raw:: latex

   \clearpage