RAIL pzflow

pzflow - RAIL creator and estimator based on normalizing flows in jax

RAIL: Redshift Assessment Infrastructure Layers

RAIL is a flexible software library providing tools to produce at-scale photometric redshift data products, including uncertainties and summary statistics, and stress-test them under realistically complex systematics. A detailed description of RAIL's modular structure is available in the Overview on ReadTheDocs.

RAIL serves as the infrastructure supporting many extragalactic applications of the Legacy Survey of Space and Time (LSST) on the Vera C. Rubin Observatory, including Rubin-wide commissioning activities. RAIL was initiated by the Photometric Redshifts (PZ) Working Group (WG) of the LSST Dark Energy Science Collaboration (DESC) as a result of the lessons learned from the Data Challenge 1 (DC1) experiment to enable the PZ WG Deliverables in the LSST-DESC Science Roadmap (see Sec. 5.18), aiming to guide the selection and implementation of redshift estimators in DESC analysis pipelines. RAIL is developed and maintained by a diverse team comprising DESC Pipeline Scientists (PSs), international in-kind contributors, LSST Interdisciplinary Collaboration for Computing (LINCC) Frameworks software engineers, and other volunteers, but all are welcome to join the team regardless of LSST data rights.

Installation

Installation instructions are available under Installation on ReadTheDocs.

Contributing

The greatest strength of RAIL is its extensibility; those interested in contributing to RAIL should start by consulting the Contributing guidelines on ReadTheDocs.

Citing RAIL

RAIL is open source and may be used according to the terms of its LICENSE (BSD 3-Clause). If you make use of the ideas or software here in any publication, you must cite this repository https://github.com/LSSTDESC/RAIL as "LSST-DESC PZ WG (in prep)" with the Zenodo DOI. Please consider also inviting the developers as co-authors on publications resulting from your use of RAIL by making an issue. Additionally, several of the codes accessible through the RAIL ecosystem must be cited if used in a publication. A convenient list of what to cite may be found under Citing RAIL on ReadTheDocs.

Development Status
- 4 - Beta
Intended Audience
- Developers
- Science/Research
License
- OSI Approved :: MIT License
Operating System
- OS Independent
Programming Language
- Python

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The following attestation bundles were made for pz_rail_pzflow-2.0.4.tar.gz:

Publisher: publish-to-pypi.yml on LSSTDESC/rail_pzflow

Attestations: Values shown here reflect the state when the release was signed and may no longer be current.

Statement:
- Statement type: https://in-toto.io/Statement/v1
- Predicate type: https://docs.pypi.org/attestations/publish/v1
- Subject name: pz_rail_pzflow-2.0.4.tar.gz
- Subject digest: 18c2760d5df95baf8895aa1cf2e9faa99d4a8e56296f663b1464b536417a9a20
- Sigstore transparency entry: 2227654037
- Sigstore integration time: Jul 23, 2026
Source repository:
- Permalink: LSSTDESC/rail_pzflow@fcd4f607abda1a9ce84a4635deac10f0b79bf877
- Branch / Tag: refs/tags/v2.0.4
- Owner: https://github.com/LSSTDESC
- Access: public
Publication detail:
- Token Issuer: https://token.actions.githubusercontent.com
- Runner Environment: github-hosted
- Publication workflow: publish-to-pypi.yml@fcd4f607abda1a9ce84a4635deac10f0b79bf877
- Trigger Event: release