SETI said the search found nothing. We reprocessed the data ourselves and found the filter that does the checking never ran.
Independent reproduction of the BL SETI pipeline on 5.2 TB of public data from the Green Bank Telescope.
Three findings: turboSETI has a structural blind spot at zero drift that no parameter can change, the on-source/off-source cadence filter crashed in every stage of the pipeline, and 111,985 hits at the resolution floor near zero drift have never been verified.
The cadence filter is the step that separates real candidates from radio interference. Without it, a Breakthrough Listen observation is just a list of every signal the telescope picked up.
We are running their software on their data and the most important step in the process is silently failing.
u/Pure-Contact7322 — 8 days ago