Selected 2024–2025 ZTF data give 19% sensitivity to 30-day WD 1145+017 episodes with uniform starts and phases for 0.25-mag, 10-minute dips every 4.5 hours

We tested how selected 2024–2025 ZTF data respond to brief episodes of repeating dips at WD 1145+017. We used 114 measurements on 79 UTC dates. We integrated exposure flux, episode start time, and orbital phase. Starts and phases have independent uniform measure. The entire episode lies inside the 527.71-day selected span. For 30-day episodes with 0.25-mag, 10-minute box dips every 4.5 hours, sensitivity is 18.84% for one date and 3.15% for two dates. The same signal across the full span gives 98.54% and 85.20%. At six specified periods, 30-day one-date sensitivity ranges from 16.07% to 19.32%. About 19.76% of allowed starts have zero sensitivity. A separate direct flux calculation checks 4.5 million artificial episodes. A closed-form test checks partial exposure boundaries. The result holds for retained catalog detections, fixed empirical residuals, fixed errors, and the stated signal model. It does not give full survey completeness or a physical episode rate. The package preserves original public tables, source provenance, a continuous integration method, results, figures, and offline reproduction instructions.

WD 1145+017 · ZTF DR24 · planetary debris · white dwarfs · finite activity episodes · transit sensitivity · continuous phase coverage · public astronomical data