The pair rule drops the improbable (higher) member of a discordant pair. If the
lower member lost its core to saturation or the mask, its profile estimate of
what remained may be low, and a genuinely strong reflection would be replaced
by the clipped value - the failure Aimless guards against.
Integration now marks a reflection whose signal disk was not fully readable
(Reflection::clipped, from the engines' existing full-disk test); the flag is
carried through the partials to the fulls (OR over an event's partials, CPU and
GPU combine alike), and the Wilson test never counts a clipped observation as
a probable witness against a larger one.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01D1G8gJVAy6gp1K5Dz3NE5C
The median outlier test needs three observations, so a reflection measured
once or twice (one good observation and one artefact, the usual case after
Friedel merging) was never tested, and where there were more, a precise-looking
artefact (a hot pixel, thousands of counts) could outweigh mates from weak
frames and become the weighted median itself.
Every observation of the written merge is now also judged against Wilson
statistics beyond 4 A: E^2 = I / (epsilon <I/epsilon>_shell), centric and
acentric laws, a bound set by alpha = 0.01 expected false rejections per
dataset (ln(2N/alpha); twice that for centrics), the lower confidence limit
I - z*sigma (own sigma, z from the same budget) required to exceed it, shells
whose <I> is not established at that significance not judged, and the bound
widened by the dataset's measured tail scale (peaks over threshold on the
well-measured shells; 1 for a Wilson crystal, larger under tNCS/anisotropy).
An improbable singleton is rejected; one with company only when most of its
reflection's other observations are probable and it disagrees with them. The
reflection is the group, or the Friedel pair under -A. Search merges are not
tested (epsilon is 1 in P1, and the screw rows are the reflections a wrong
epsilon would call improbable). The flags are handed to the device merge as
pre-rejections, so CPU and GPU agree.
Report: OBSERVATIONS_REJECTED_WILSON= (part of OBSERVATIONS_REJECTED=), and the
developer report lists each rejected observation (hkl, d, E^2, image, x, y).
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01D1G8gJVAy6gp1K5Dz3NE5C
leonarski_fandClaude Opus 5.5