CollectOverMetrics reads from the event logs of servers in a DatabaseAvailabilityGroup to gather information on database ...

CollectOverMetrics reads from the event logs of servers in a DatabaseAvailabilityGroup to gather information on database mounts, moves, and failovers (collectively known as "operations") over some time period.  For each operation, it will record the identity of the database, the time that the operation began and ended, the servers that the database was mounted on at the start and finish, the reason for the operation, whether the operation was succesful, and details of the error if it failed.  It writes all of these details to CSV files, which can be opened by Excel, with one operation per row.  It writes a separate CSV file for each DatabaseAvailabilityGroup that it is reporting on.