leonarski_fandClaude Opus 4.8
74d7589abe
The stills scaling/merging path (ScaleOnTheFly + MergeOnTheFly) had no correction surfaces, whereas rotation fits decay/absorption/modulation inside RotationScaleMerge. Serial stills hammer the same detector regions shot after shot, so a detector-plane (flat-field) systematic is at least as well determined there as in rotation - it just had no home. Add MergeOnTheFly::RefineModulation: a 16x16 multiplicative surface over the predicted detector position, fit against the merged reference and folded into each reflection's image_scale_corr before the error model and the merge. It mirrors RotationScaleMerge::ApplyCellSurface - alternating per-cell fit with a den-weighted geometric-mean gauge (never drifts the overall scale) and Tikhonov pull to 1 - and is cross-validated the same way: fit the surface on even images, score the held-out odd equivalents by a sigma-independent R-meas-like agreement (a fractional metric a sigma-reshaping surface cannot game), and apply the full-data surface only if the held-out gain clears a margin. A no-op when the systematic is absent or the data too sparse (< 8 obs per cell), so it is safe to leave off by default and opt in. Wired through ScalingSettings::StillsModulation and rugnux --stills-modulation (default off), in both the full-analysis and --scale paths. On a 17 MP JUNGFRAU serial set the surface cross-validates with a large held-out gain, confirming a real detector-plane systematic; whether it improves the merged data quality is under evaluation. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Jungfraujoch
Application to receive data from the PSI JUNGFRAU and EIGER detectors.
All documentation is now placed in docs/ subdirectory and for the current version hosted on Jungfraujoch Read The Docs page.