Processed Data Products for CET Ω Ringdown Tests Using GWTC-1 and GWTC-3

This record contains the final processed data products and population-level results associated with the CET Ω black hole ringdown analysis of GWTC-1 and GWTC-3 events. Intermediate per-event Bilby inference outputs are not included, as they are fully reproducible using the accompanying public pipeline. The released pipeline version includes several validation and robustness improvements relative to earlier internal development versions. In particular, it implements a consistent whitening-domain time-series likelihood with template normalization matched to the conditioned data, analytic amplitude maximization, and per-event PSD-based conditioning. The pipeline has been validated through dedicated inject–recover campaigns in Gaussian noise and in real off-source detector noise segments, showing unbiased amplitude recovery and well-behaved residual statistics. Additional robustness modules are included, such as jackknife stacked analyses, detector-split stacking, null tests with independent per-event deformation parameters, and a PSD-weighted frequency-domain likelihood cross-check for representative events. A minimal inter-detector time-shift coherence test is also implemented. Together, these tests indicate that the population-level stacked results are stable under changes in conditioning, detector subsets, and likelihood representation. All results in this record are therefore reproducible from raw public GWOSC strain data using the provided scripts and configuration files.