Output Product: Spherical E/B Convergence Maps¶
Data product name¶
twoDMassConvergenceSphere
Data product custodian¶
2D-MASS-WL
Data model tag¶
(TBF)
Name of the Schema file¶
euc-test-le3-wl-twodmass-ConvergenceSphere.xsd
Schema documentation tag¶
Data product documentation:
Data Product for twoDMassConvergenceSphere.
Documentation for data product element dpdTwoDMassConvergenceSphere:
This product contains 2D “wide-field” convergence maps (denoised and/or noisy), and/or SNR map, galaxy count and Monte-Carlo realizations computed on the sphere.
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: wl2dmass:twoDMassCollectConvergenceSphere
QualityFlags of type: dqc:sqfPlaceHolder
Parameters of type: ppr:genericKeyValueParameters
Processing Element(s) creating/using the data product¶
2D-MASS-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 contains four optional FITS structures:
a noisy convergence map as a FITS data array (one HDU per redshift bin) containing the E/B convergence HEALPix maps. Important input parameters are stored as keywords, in particular, the DENTYPE keyword indicates that the data has not been denoised [NoisyConvergence XML tag]
a denoised convergence map as a FITs data array (one HDU per redshift bin) containing the HEALPix denoised E/B convergence maps. Important input parameters are stored as keywords, in particular, the DENTYPE keyword indicates that the data has been denoised [DenoisedConvergence XML tag]
several Monte-Carlo maps as multiple FITS data arrays (one FITS per realization) containing the HEALPix E/B convergence maps for a realization (one HDU per redshift bin), of same format as the previous ones [MonteCarloMap XML tag]
a galaxy-count map as a FITS data array (one HDU per redshift bin) containing the number of galaxies per pixel [GalCount XML tag]
a “NResamples” field to specify the number of samples that were used to compute the SNR maps [int]
a SNR map as a FITS data array (one HDU per redshift bin) containing the E/B SNR HEALPix maps [SNRMaps XML tag]
an associated spatial footprint (see spatialFootprint here) [cot:spatialFootprint].
All products have same primary array, described as follows, characterizing the important parameters of the product, such as the coordinate system:
RADESYS: Coordinate system (e.g. ‘FK5’) [string]
EQUINOX: equinox of celestial coordinate system (e.g. 2000) [string]
DATE-OBS: start of observation with format ‘yyyy-mm-ddThh:mm:ss.sss’ [string]
DATE-END: end of observation with format ‘yyyy-mm-ddThh:mm:ss.sss’ [string]
and basic software parameters:
SHE_SOFT: which SHE catalogue used [StringKeyword]
SOFTNAME: software used to create the product [string]
SOFTVERS: version of software [string]
NITREDSH: number of iteration to compute reduced shear [int]
STDREDSH: standard deviation for Gaussian smoothing performed to compute the reduced shear (0 if no Gaussian smoothing) [double]
FDRREDSH: false discovery rate threshold used to compute the reduced shear [double]
NITINP: number of iteration for inpainting (0 if no inpainting) [int]
NSCINP: number of scale for inpainting (0 if no inpainting) [int]
VARPERSC: flag specifying if equal variance in/out masked area per scale [bool]
FBMODE: flag specifying if B-Mode forced to 0 in the gaps [bool]
DENTYPE: denoising type (e.g. Gaussian, None, name of third party software) [string]
GAUSSSTD: standard deviation for Gaussian smoothing (0 if no Gaussian smoothing) [double]
FDRVAL: false discovery rate threshold [double]
NZBINS: number of redshift bins [int]
BAL_BINS: Balanced redshift bins or not [bool]
MCSEED: Noise MC seed (None if no MC realization) [string]
MCREAL: number associated to the MC realization of the convergence map (None if no MC realization) [int]
NRESAMPL: number of resampling of input catalog [int]
They however differ in the information stored in the next HDUs.
Noisy or denoised convergence maps/Monte Carlo realizations¶
For the array in HDU (HDU= 1..N, one per redshift bin), the following keywords are specified for each hdu, starting with required HEALPix keywords (see https://healpix.sourceforge.io/data/examples/healpix_fits_specs.pdf):
PIXTYPE =’HEALPIX’ [string]
ORDERING: ‘RING’ or ‘NESTED’ [string]
NSIDE: resolution parameter [int]
FIRSTPIX: lowest index in maps [int]
LASTPIX: highest index in Maps [int]
INDEXSCHM: ‘IMPLICIT’ or ‘EXPLICIT’ [string]
OBJECT: ‘FULLSKY’ [string]
and redshift parameters:
ZMIN: minimum of the redshift bin [double]
ZMAX: maximum of the redshift bin [double]
EXTNAME = “KAPPA_SPHERE”
For each redshift bin (1 hdu per redshift bin), the E/B modes are stored in a 2d binary table with two vector columns (KAPPA_E, KAPPA_B)s.
Galaxy-count maps¶
For the array in a HDU (HDU= 1..N, one per redshift bin), the following keywords are specified, starting with required HEALPix keywords (see https://healpix.sourceforge.io/data/examples/healpix_fits_specs.pdf):
PIXTYPE =’HEALPIX’ [string]
ORDERING: ‘RING’ or ‘NESTED’ [string]
NSIDE: resolution parameter [int]
FIRSTPIX: lowest index in maps [int]
LASTPIX: highest index in Maps [int]
INDEXSCHM: ‘IMPLICIT’ or ‘EXPLICIT’ [string]
OBJECT: ‘FULLSKY’ [string]
and redshift parameters:
ZMIN: minimum of the redshift bin [double]
ZMAX: maximum of the redshift bin [double]
EXTNAME = “GALCOUNT_SPHERE”
According to HEALPix convention, for each redshift bin, a GALCOUNT column will contain the number of Galaxies measured per pixel on the sphere and redshift bin considered, which can also be used to identify the area inpainted (pixel without measured galaxies).
SNR maps¶
For the array in HDU (HDU= 1..N, one per redshift bin), the following keywords are specified for each hdu, starting with required HEALPix keywords (see https://healpix.sourceforge.io/data/examples/healpix_fits_specs.pdf):
PIXTYPE =’HEALPIX’ [string]
ORDERING: ‘RING’ or ‘NESTED’ [string]
NSIDE: resolution parameter [int]
FIRSTPIX: lowest index in maps [int]
LASTPIX: highest index in Maps [int]
INDEXSCHM: ‘IMPLICIT’ or ‘EXPLICIT’ [string]
OBJECT: ‘FULLSKY’ [string]
and redshift parameters:
ZMIN: minimum of the redshift bin [double]
ZMAX: maximum of the redshift bin [double]
EXTNAME = “SNR_SPHERE”
According to HEALPix convention, for each redshift bin (1 hdu per redshift bin), the maps are stored in a 2d binary table with two vector columns (SNR_E, SNR_B), associated to the E/B SNR maps.