One deposited marCCD sweep carries -2093438692 in its exposure field. Passed on as
written that is a negative count time, DiffractionExperiment refuses it, and the
whole dataset fails to open - over a number that feeds no geometry, no indexing and
no merge. With the field ignored when it is implausible, that sweep processes and
matches its deposition: P2_12_12_1, cell within 0.12%, and 1.375 A against a
deposited 2.0.
Neither format guarantees the field. The same guard is in the SMV reader, whose TIME
key is no better attested, and both say what they did rather than passing over it
silently.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
leonarski_fandClaude Opus 5
39a98692e2