Data Product for CovarTwoPCFWLShearPos2D. .. include:: ../../wlsubstitutions.rst .. _CovarTwoPCFWLShearShear2D:

Covariance of Tomographic Cosmic Shear Correlation Output Product

Data product name

CovarTwoPCFWLShearShear2D

Data product custodian

CM-2PCF-WL

Data model tag

|WLDMTAG|

Name of the Schema file

euc-test-le3-wl-cm2pcf-ShearShear2D.xsd

Schema documentation tag

Data product documentation:

Data Product for CovarTwoPCFWLShearShear2D.

Documentation for data product element dpdCovarTwoPCFWLShearShear2D:

This product contains the covariance matrix for cosmic shear 2PCF.

Documentation for data product element Header:

The generic header of the product

Documentation for data product element Data:

The data of the product

Data product elements

Header of type: sys:genericHeader

Data of type: wlcm2pcf:covarTwoPCFWLShearShear2D

Parameters of type: ppr:genericKeyValueParameters

Processing Element(s) creating/using the data product

CM-2PCF-WL

Processing function using the data product

SGS pipeline output product to be used by SWGs

Detailed description of the data product

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 as described in

Extra metadata associated to the FITS container are the following:

  • 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:

  1. RS_EST: choice of resampling estimator (Jackknife, Bootstrap) [StringKeyword]

  2. RS_STR: choice of resampling strategy (Catalog, Spatial) [StringKeyword]

  3. THMIN: minimal angular value chosen for spatial binning [DoubleKeyword]

  4. THMAX: maximal angular value chosen for spatial binning [DoubleKeyword]

  5. OATH: maximal open angle value used for the approximation [DoubleKeyword]

  6. THUNIT: unit of spatial distance [StringKeyword]

  7. BINSCALE: whether lin or log bins [StringKeyword]

  8. COORDSYS: if spherical or cartesian computation of distances [StringKeyword]

  9. SHE_SOFT: which SHE catalogue used [StringKeyword]

  10. SHE_SEL: selection for shear catalogue [StringKeyword]

  11. SOFTNAME: name of software used for 2PCF [StringKeyword]

  12. SOFTVERS: version of software used for 2PCF [StringKeyword]

The cosmic shear 2PCF are defined as:

\xi_\pm &=\langle \epsilon_t \epsilon_t\rangle \pm \langle \epsilon_x \epsilon_x\rangle\\ \xi_x &= \langle \epsilon_t \epsilon_x \rangle

with \epsilon_t tangential component and \epsilon_x cross component of ellipticity.

Covariance table

The table (first HDU, EXTNAME=”RS_COVAR_SHEARSHEAR2D”) will contain the following columns:

  1. THETA_1: first angular separation (center of spatial bin) [D, float64]

  2. THETA_2: second angular separation (center of spatial bin) [D, float64]

  3. BIN_COMB1: first index for combination of redshift bins [J, int32]

  4. BIN_COMB2: second index for combination of redshift bins [J, int32]

  5. COV_PP_RS: covariance between shear-shear \xi_+ components [D, float64]

  6. COV_MM_RS: covariance between shear-shear \xi_- components [D, float64]

  7. COV_PM_RS: covariance between shear-shear \xi_+ and \xi_- components [D, float64]

Note

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

  1. THETA_1: first angular separation (center of spatial bin) [D, float64]

  2. THETA_2: second angular separation (center of spatial bin) [D, float64]

  3. BIN_COMB1: first index for combination of redshift bins [J, int32]

  4. BIN_COMB2: second index for combination of redshift bins [J, int32]

  5. COV_PP_SH: covariance between shear-shear \xi_+ components [D, float64]

  6. COV_MM_SH: covariance between shear-shear \xi_- components [D, float64]

  7. COV_PM_SH: covariance between shear-shear \xi_+ and \xi_- components [D, float64]