Validation of weak-lensing catalogues (galaxy and star shapes and other parameters) produced by ShapePipe.
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Authors: CosmoStat lab at CEA Paris-Saclay; Martin Kilbinger, Axel Guinot.
Contributors: Emma Ayçoberry, Lucie Baumont, Clara Bonini, Cail Daley, Samuel Farrens, Sacha Guerrini, Fabian Hervas Peters.
Email: [email protected]
This package contains a library and several scripts and notebooks. The main
tasks that can be performed by sp_validation are:
- Shear validation, in particular for the output of the
shapepipepipeline. This task takes on input a shear catalogue with metacal information, performs the calibration and carries out various tests, e.g. PSF leakage. A calibrated shear catalogue is then created on output. - Post processing. A number of scripts allow further processing of the above output calibrated shear catalogue.
- Cosmology validation. This task uses the calibrated shear catalogue from above to run detailed diagnostics useful for further cosmology analysis, e.g. rho- and tau-statistics, E-/B-mode decomposition. Several catalogues can be compared and useful plots are created.
- Cosmology inference. This task uses the calibrated shear catalogue from a shear validation run and performes cosmology inference using the two-point correlation function.
The following flow chart illustrates the steps required to go from ShapePipe output products to calibrated and well-selected galaxy catalogues.
See the documentation for instructions on how to set up and run sp_validation.
The output(s) of one or more shear validation runs can be processed further with post-processing scripts. See here for details.
TBD.
See the corresponding documentation.