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This script lives in in /reg/g/psdm/tutorials/examplePythonexamplePython3/evr.py. EVR data is often used to determine what happened on an event by looking at "event codes". Experiments often use these event codes to indicate whether a pump laser was on/off for a particular shot, or whether beam was present on that shot ("dropped shots"). Experiments sometimes set up complex "event sequences" to create different behavior on different shots (via different event-codes generated by the LCLS timing system).
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