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cosmo_val dashboard: the catalogue paper's validation figures for v2

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#433 0 comentarios 0 reacciones 0 asignados Ver en GitHub

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Ya se ha fusionado un pull request relacionado.

  • #434 de @cailmdaley — fusionado

Evaluación

Dificultad
5/5
Tiempo estimado
Más de una semana
Aptitud para principiantes
35/100
Tipo de issue
Nueva funcionalidad
Claridad
Bastante claro
Estado de actividad
Activo
Stack tecnológico
python
Área
data-visualization

Línea de trabajo

Start by reading the cosmo_val dashboard and the catalogue passes on feat/catalogue-paper-figures, then inspect the TreeCorr correlation work on feat/catalogue-paper-correlations. Compare the listed figures with the existing dashboard products and tests to identify the relevant entry points. Done means all applicable validation figures are produced from catalogue snapshots; the two items marked Later remain dependent on per-exposure galaxy positions.

Escrito por el modelo de indexación a partir del texto del issue.

Descripción

The UNIONS shear catalogue paper (Paper I, v1.4.6.3) validates the catalogue with 32 figures. For v2, the cosmo_val dashboard should produce every applicable one from its own products, so each catalogue snapshot gets the same validation without anyone assembling plots by hand.

Already on the dashboard: n_eff and shape-noise maps, e1/e2 maps, PSF FWHM and star−PSF size maps, ρ, τ, the α–β–η posterior, and ξ_sys/ξ+.

To add, from catalogue passes (feat/catalogue-paper-figures):

  • the SNR × size cell grid (counts, weights, response, shape noise)
  • the galaxy response histogram
  • residual star properties
  • the star density map
  • the r-magnitude map
  • magnitude histograms by selection stage
  • object-wise α per SNR × resolution cell
  • ξ_sys from α–β–η vs α only
  • additive-bias regressions against observables

To add, from TreeCorr position–shear correlations (feat/catalogue-paper-correlations):

  • galaxy γ_t/γ_× around PSF stars
  • PSF-star shapes around galaxies
  • galaxy shapes around tile centres
  • galaxy shapes around Gaia DR3 stars in G bins
  • α(θ) in magnitude bins

Later: galaxy shapes around CCD centres and the focal-plane mean shear. Both need each galaxy's position on each exposure.

Not applicable to cosmo_val: the MCALens κ map (cosmological signal from a separate pipeline) and the detection-image cutout.

All new figures are systematics tests rather than cosmological statistics, so none of them emits ξ±, Cℓ or κ. They stack on feat/cosmo-val-dashboard-figures.

Claude Opus 5.5 on behalf of Cail Daley

Lenguaje dominante
Python
Estrellas
2
Forks
5
Merge medio
1 d 1 h
PR fusionados (30 d)
26

Preparar el entorno

Primeros pasos

  1. Lee el issue completo y luego la guía de contribución del proyecto.
  2. Comenta en el issue que vas a ocuparte — evita que dos personas hagan lo mismo.
  3. Haz un fork del repositorio y trabaja en una rama.
  4. Abre un pull request que haga referencia al número del issue.

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