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Epoch timestamps in SAXSWAXS #383
Description
We noticed that the Epoch timestamps in the SAXSWAXS data appear to be offset from their expected values.
I believe the issue may be that the workflow is adding the per-datapoint Epoch value to the start time of the individual scan. However, these Epoch values should instead be referenced to the #E value in the SPEC data file.
In other words, the timestamp for each datapoint should be calculated by adding the recorded Epoch offset to the #E value, rather than to the scan start time.
Tagging @jcrossno-afrl
Activity
jpk96 commentedon Oct 19, 2026
For SPEC data files containing multiple #E entries, each scan should use the most recent #E value. This ensures that Epoch offsets are referenced to the correct absolute timestamp, particularly when data collection is resumed in an existing SPEC data file after acquiring data in a different SPEC data file.