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reader: treat negative total_flux as unknown/absent

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Serial-stills master files can store /entry/instrument/beam/total_flux as a
-1.0 "unknown flux" sentinel (seen in the OCP dark dataset). DatasetSettings
rejects values below 0, so opening such a file hard-failed with
"Input parameter below min (Total flux)". Reset a negative flux to nullopt so
it is treated as absent instead of aborting the read.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
leonarski_f
2026-07-13 19:46:48 +02:00
co-authored by Claude Opus 4.8
parent 3df9ad631b
commit 87778c6500
1 changed files with 4 additions and 1 deletions
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reader/HDF5MetadataSource.cpp
+4 -1
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@@ -611,7 +611,10 @@ HDF5MetadataSource::OpenResult HDF5MetadataSource::Open(const std::string &filen
if (master_file->Exists("/entry/instrument/attenuator"))
dataset->experiment.AttenuatorTransmission(
master_file->GetOptFloat("/entry/instrument/attenuator/attenuator_transmission"));
dataset->experiment.TotalFlux(master_file->GetOptFloat("/entry/instrument/beam/total_flux"));
auto total_flux = master_file->GetOptFloat("/entry/instrument/beam/total_flux");
if (total_flux.has_value() && total_flux.value() < 0)
total_flux.reset(); // negative value is an "unknown flux" sentinel; treat as absent
dataset->experiment.TotalFlux(total_flux);
if (master_file->Exists("/entry/azint") && master_file->Exists("/entry/azint/bin_to_q")) {
HDF5DataSet bin_to_q_dataset(*master_file, "/entry/azint/bin_to_q");