We describe the effort to characterize gravitational-wave searches and detector sensitivity to different types of compact binary coalescences during the LIGO-Virgo-KAGRA Collaborations' fourth observing run. We discuss the design requirements and example use cases for this data product, constructed from >4.33×108 injections during O4a alone. We also identify subtle effects with high confidence, like diurnal duty cycles within detectors. This paper accompanies a public data release of the curated injection set, and the appendixes give detailed examples of how to use the publicly available data.
@article{arxiv.2508.10638,
title = {Compact Binary Coalescence Sensitivity Estimates with Injection Campaigns during the LIGO-Virgo-KAGRA Collaborations' Fourth Observing Run},
author = {Reed Essick and Michael W. Coughlin and Michael Zevin and Deep Chatterjee and Teagan A. Clarke and Storm Colloms and Utkarsh Mali and Simona Miller and Nathan Steinle and Pratyusava Baral and Amanda C. Baylor and Gareth Cabourn Davies and Thomas Dent and Prathamesh Joshi and Praveen Kumar and Cody Messick and Tanmaya Mishra and Amazigh Ouzriat and Khun Sang Phukon and Lorenzo Piccari and Marion Pillas and Max Trevor and Thomas A. Callister and Maya Fishbach},
journal= {arXiv preprint arXiv:2508.10638},
year = {2025}
}