Output Product: Cosmic Shear E/B Power Spectra¶

Metadata¶

Data product name	DpdTwoPCFWLPEBShearShear2D
Data product custodian	WLTWOPCF
Name of the Schema file	euc-le3-wl-twopcf-PEBShearShear2D.xsd
Last Edited for DPDD Version	1.1
Processing Element(s) creating/using the data product	Creators: LE3_2PCF_WL_ShearShear_Pipeline LE3_CM_2PCF_WL_ShearShear_Pipeline Consumers: WL-SWG
Processing function using the data product	SGS pipeline output product to be used by LE3 and SWGs
Proposed for inclusion in EAS/SAS	This product is proposed for inclusion in the SAS: Yes Motivation: the product contains the two-point shear-shear tomographic real-space second order statistic EE,BB,EB functions requested by the RSD document.

Header	object of type sys:genericHeader
Data	object of type wl2pcf:twoPCFWLPEBShearShear2D
QualityFlags	object of type dqc:sqfPlaceHolder
Parameters	object of type ppr:genericKeyValueParameters

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

This output product is a fits file (see le3.wl.2pcf.output.pebshearshear2d in the following FITS descriptors).

Extra (optional) 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 2 elements]
- CatalogFileName: the name of the input catalogue [sys:dataFileName]
- CatalogSHE: type of input catalogue [string among “BFD”, “KSB”, “LensMC”,”MomentsML”,”REGAUSS”,”MER_PHZ”, “OTHER” ]
- 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 [string among “Pos”, “Shear”] (=[“Shear”])
- CatalogOrder: order associated to catalogue for reporting (e.g. BIN_ID1)[int32]

The fits file contains:

a primary array containing important computation parameters as keywords,
binary tables in the next HDUs with cosmic shear E/B power spectra for specific redshift bins.

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

HDU PRIMARY: header
	Name	Description	Value
Keywords	SIMPLE		logical
	BITPIX		integer
	NAXIS		integer
	EXTEND		logical
	THMIN	Min of angular range	double
	THMAX	Max of angular range	double
	OATH	Open Angle threshold	double
	THUNIT	Unit of theta	string
	BINSCALE	lin or log bins	string
	COORDSYS	cartesian or spherical	string
	SHE_SOFT	Where the input catalogue is coming from (if SHE catalogue used)	string
	SHE_SEL	ID of selection made (e.g. tomographic redshifts, stellar mass)	string
	SOFTNAME		string
	SOFTVERS		string
	BLINDING	Flag that identifies products that have been blinded for scientific analysis	string

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: if linear or logarithmic scales are used for output [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 PEB [StringKeyword]
SOFTVERS: version of software used for PEB [StringKeyword]

The following keywords are added to the header of the HDUs:

HDU SHEARSHEAR2D_PEB_n: 6 columns table
	Name	Description	Unit	Format
Columns	ELL		NA	FITS D
	PE		NA	FITS D
	PB		NA	FITS D
	PEB		NA	FITS D
	ELL_LOWER		NA	FITS D
	ELL_UPPER		NA	FITS D

and the columns are:

Note

Under discussion is the possibility in the future of having as first HDU a summary table with information on the binning for spectra tables (HDU>2):

and in the second hdu a summary table to allow fast access to the HDU corresponding to a particular bin combination: