Source of timestamps for cryoSPARC live Overview/Browse

Where do the absolute timestamps in cryoSPARC Live come from? I’m referring to the timestamps generated in the Overview graphs, or when Timestamp is output in the graphs for Browse.

I was expecting a timestamp corresponding to when the image was collected by the microscoipe, but it seems to be when the image was processed by cryoSPARC. Is it possible to get a timestamp for when the image was collected by the microscope as part of the CSV when output via the Browse menu?

This timestamp corresponds to the start of processing for a given exposure.

The timestamp of exposure file creation is not collected by CryoSPARC, but should be obtainable from either the filesystem or data acquisition software.