Published October 11, 2023 | Version v1
Dataset Open

A Unified pastro for Gravitational Waves: Consistently Combining Information from Multiple Search Pipelines

  • 1. Center for Interdisciplinary Exploration and Research in Astrophysics, Northwestern University, 1800 Sherman Ave, Evanston, IL 60201, USA
  • 2. SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, UK
  • 3. University of Portsmouth, Portsmouth PO1 3FX, United Kingdom
  • 4. Department of Physics, The Pennsylvania State University, University Park, PA 16802, USA


This repository is made to contain the data products released with the paper " A Unified p-astro for Gravitational Waves: Consistently Combining Information from Multiple Search Pipelines". In this paper, we showed how information from multiple GW pipelines can be combined to calculate a single probability of astrophysical origin - p-astro for GW triggers. This repository contains the joint probability distributions trained using injection (simulated signal) and noise triggers from the PyCBC and gstLAL pipelines from the O3 observing run of LIGO and Virgo. Using these distributions, a unified p-astro can be calculated for the on-source triggers from GWTC-2.1, as we show in the paper. 

If you would like to download all files on this page, we recommend zenodo_get:

pip install zenodo_get zenodo-get RECORD_ID_OR_DOI


There are two data products in this repository.

1. A text file "pastro_calcs.txt" which has the unified p-astro of all triggers from GWTC-2.1

2. A pickle file containing the injection KDEs and the noise distribution files, along with the values of the normalization constants for the various cases.


The pickle file can be read in python by,

import pickle pdf = pickle.load(open('zenodo_pdf.pickle', 'rb'))


The injection KDEs were created using search pipelines run on simulated signals done by the LIGO-Virgo-KAGRA collaboration. The injection files can be found in this zenodo



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