ZTF DR24 records deep dimming at ZTF J1944+4557 on 1 and 8 August 2025

Public ZTF DR24 data show two deep dimming measurements at the white dwarf ZTF J1944+4557. This star has known debris transits. The added data follow the July 2025 end of published observations. We test 62 public survey g and r exposures from August to October 2025. We use a quiet July to October 2024 reference and corrections from nearby stars. The measured flux decreases are 29.6 ± 5.1 percent in g on 1 August and 44.0 ± 5.8 percent in r on 8 August. The errors are one standard error in percentage points. Both measurements pass stricter image cuts. Fixed apertures in six public science-image cutouts also show less target light in the event images. There are no equally defined deep measurements among 1322 later control measurements. The selected deep fraction decreases from 13/71 in April to July to 2/62 in August to October. Missing catalog classifications alone cannot remove this decrease on the available image inventory. Sparse sampling prevents a physical transit rate estimate. Each August result is one short exposure. The data support later debris activity but do not resolve a transit or establish a new planet or period. The package preserves the input bytes, provenance, code, figures, selection records, and offline reproduction instructions.

white dwarf · planetary debris · ZTF J1944+4557 · ZTF DR24 · transits · public data · differential photometry · reproducible astronomy