Alpha-Sigma Benchmark: O4 Gravitational-Wave Collapse Results (v1.1)

This dataset contains the summary results of a benchmarking analysis of 20 gravitational-wave (GW) events observed during the O4 run (May–Sept 2023). Event-level χ_eff posteriors were examined, and the benchmarks show systematic reductions in scatter, with an average reduction of ~40% across the sample. Included in this deposit are: gw_baseline.xlsx – baseline scatter statistics, gw_event_log.csv – event IDs and logged outcomes, gw_individual_summary.txt – per-event summaries, Documentation and licensing information. Core analytic methods are withheld to protect intellectual property. Extended access may be available under NDA.