.. include:: ../../wlsubstitutions.rst
.. _CovarTwoPCFWLPEBShearShear2D:

Covariance of Tomographic Cosmic Shear EB Power Spectra Output Product
----------------------------------------------------------------------

Data product name
=================
.. DataProductNameStart

CovarTwoPCFWLPEBShearShear2D

.. DataProductNameEnd

Data product custodian
======================
.. DataProductCustodianStart

CM-2PCF-WL

.. DataProductCustodianEnd

Data model tag
==============
.. DataModelTagStart

|WLDMTAG|

.. DataModelTagEnd

Name of the Schema file
=======================
.. NameSchemaStart

euc-test-le3-wl-cm2pcf-PEBShearShear2D.xsd

.. NameSchemaEnd

Schema documentation tag
========================
.. SchemaDocTagStart

:emphasis:`Data product documentation:`

Data Product for CovarTwoPCFWLEBShearShear2D

:emphasis:`Documentation for data product element dpdCovarTwoPCFWLPEBShearShear2D:`

This product contains the covariance matrix for tomographic cosmic shear E/B power spectra.

:emphasis:`Documentation for data product element Header:`

The generic header of the product

:emphasis:`Documentation for data product element Data:`

The data of the product


.. SchemaDocTagEnd

Data product elements
=====================
.. DataProductElementsStart

Header of type: sys:genericHeader

Data of type: wlcm2pcf:covarTwoPCFWLPEBShearShear2D

Parameters of type: ppr:genericKeyValueParameters


.. DataProductElementsEnd

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

CM-2PCF-WL

.. PECreatorEnd

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

SGS pipeline output product to be used by SWGs

.. PFUsingEnd

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

This output product is a fits binary table containing important input
parameters as keywords in primary HDU, and a binary table in the next HDU with the
covariance for cosmic shear E/B modes, as described in
 `le3.wl.cm2pcf.output.pebshearshear2d <https://gitlab.euclid-sgs.uk/ST-DM/ST_DataModel/tree/develop/instances/fit/euc-test-le3-wl.xml>`_.

* **SpatialCoverage** a description of the spatial footprint [optional, cot:spatialFootprint],
* **CatalogSelection**: describing the selection in the input catalogues [optional, up to 4 elements]

  *  **CatalogFileName**: the name of the input catalogue [sys:dataFileName]
  *  **Selection**: selection associated to catalogue [string]
  *  **CatalogUse**: for which use case the catalog is employed (=["ShearShear"])
     [string among "PosPos", "PosShear", "ShearShear"]
  *  **CatalogInfo**:  whether position or shear information is used in this catalogue (=["Shear"])
     [string among "Pos", "Shear"]
  * **CatalogOrder**: order associated to catalogue for reporting (e.g. BIN_ID1)[int32]

Keywords
+++++++++++++

This fits table is expected to contain the following keywords in primary HDU,
characterizing the important parameters of the product:

#. **RS_EST**: choice of resampling estimator (Jackknife, Bootstrap) [StringKeyword]
#. **RS_STR**: choice of resampling strategy (Catalog, Spatial) [StringKeyword]
#. **THMIN**: minimal angular value chosen for spatial binning [DoubleKeyword]
#. **THMAX**: maximal angular value chosen for spatial binning [DoubleKeyword]
#. **OATH**: maximal open angle value used for the approximation [DoubleKeyword]
#. **THUNIT**: unit of spatial distance [StringKeyword]
#. **BINSCALE**: whether lin or log bins [StringKeyword]
#. **COORDSYS**: if spherical or cartesian computation of distances [StringKeyword]
#. **SHE_SOFT**: which SHE catalogue used [StringKeyword]
#. **SHE_SEL**: selection for shear catalogue [StringKeyword]
#. **SOFTNAME**: name of software used for 2PCF [StringKeyword]
#. **SOFTVERS**: version of software used for 2PCF [StringKeyword]

Covariance table
+++++++++++++++++

The table (first HDU, EXTNAME="RS_COVAR_EB_SHEARSHEAR2D") will contain the following columns:

#. **ELL1**: first mean multipole [D, float64]
#. **ELL2**: second mean multipole [D, float64]
#. **BIN_COMB1**: first index for combination of redshift bins [J, int32]
#. **BIN_COMB2**: second index for combination of redshift bins [J, int32]
#. **PE_PE**: covariance between E band power spectrum [D, float64]
#. **PB_PB**: covariance between B band power spectrum [D, float64]
#. **PEB_PEB**: covariance between EB band power spectrum [D, float64]
#. **PE_PB**: covariance between E and B band power spectra [D, float64]
#. **PE_PEB**: covariance between E and EB band power spectra [D, float64]
#. **PB_PEB**: covariance between B and EB band power spectra [D, float64]

.. note::
    Under discussion is the possibility in the future of having as first HDU an
    estimate for Shot Noise :

    #. **ELL1**: first mean multipole [D, float64]
    #. **ELL2**: second mean multipole [D, float64]
    #. **BIN_COMB1**: first index for combination of redshift bins [J, int32]
    #. **BIN_COMB2**: second index for combination of redshift bins [J, int32]
    #. **PE_PE_SH**: covariance between E band power spectrum (shape/shot noise) [D, float64]
    #. **PB_PB_SH**: covariance between B band power spectrum (shape/shot noise) [D, float64]
    #. **PEB_PEB_SH**: covariance between EB band power spectrum (shape/shot noise) [D, float64]
    #. **PE_PB_SH**: covariance between E and B band power spectra (shape/shot noise) [D, float64]
    #. **PE_PEB_SH**: covariance between E and EB band power spectra (shape/shot noise) [D, float64]
    #. **PB_PEB_SH**: covariance between B and EB band power spectra (shape/shot noise) [D, float64]

.. warning:: We have discussed to add later in the primary header

   .. code-block:: XML

         <IntegerKeyword name="SHE_SEL"/> <!-- ID of selection made (e.g. tomographic redshifts, stellar mass…) -->

.. DetailedDescEnd