This data was indeed collected and viewable during this time period.
However, the process that was supposed to store it to deep storage ran out of disk space, and thus resulted in that block of data being corrupted and thus discarded.
Even though this is historical data at this point, we take this very seriously. We are putting in measures so an incident like this can never happen again.
A subset of account may see missing data from Sep 23 05:00 to Sep 24 15:00.