IDEX Update event time calculation

[lacoak21]

Change Summary

Overview

The IDEX team realized they were using shcoarse for event time calculation. This was actually the time of the packet calculation and not the time when IDEX triggered.

I think @tech3371 you had this concern in the science team meeting a long time ago but I thought they said we were doing it right! Anyway this is the correct way to do it.

Updated Files

-imap_processing/idex/idex_l1a.py

• Fix function to handle epoch calculation for science times using event trigger time variables instead of shcoarse and sfine. Continue to use shcoarse and sfine for housekeeping because they do not contain the other variables.