Covariance of Tomographic Galaxy-Galaxy Lensing Correlation Output Product

Data product name

CovarTwoPCFWLPosShear2D

Data product custodian

CM-2PCF-WL

Data model tag

Trunk, commit 18691

Name of the Schema file

euc-test-le3-wl-cm2pcf-PosShear2D.xsd

Schema documentation tag

Data product documentation:

Data Product for CovarTwoPCFWLPosShear2D.

Documentation for data product element dpdCovarTwoPCFWLPosShear2D:

This product contains the covariance matrix for tomographic galaxy - galaxy lensing 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:covarTwoPCFWLPosShear2D

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 tomographic galaxy-galaxy lensing 2PCF,as described in le3.wl.cm2pcf.output.posshear2d.

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 (=[“PosShear”]) [string among “PosPos”, “PosShear”, “ShearShear”]

    • CatalogInfo: whether position or shear information is used in this catalogue [string among “Pos”, “Shear”]

    • CatalogOrder: order associated to catalogue for reporting (e.g. BIN_ID1)[int32]

Keywords (Primary hdu)

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. POS_SEL: selection for position catalogue [StringKeyword]

  11. SHE_SEL: selection for shear catalogue [StringKeyword]

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

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

Covariance table

The second table (second extension, EXTNAME=”RS_COVAR_POSSHEAR2D”) 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_GTGT_RS: covariance between shear-position tangential components [D, float64]

  6. COV_GXGX_RS: covariance between shear-position cross components [D, float64]

  7. COV_GTGX_RS: covariance between shear-position tangential and cross 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_GTGT_SH: covariance between shear-position tangential components [D, float64]

  6. COV_GXGX_SH: covariance between shear-position cross components [D, float64]

  7. COV_GTGX_SH: covariance between shear-position tangential and cross components [D, float64]