Determine the allowable PCES disk writes for hardware longevity

There is concern that writing events to PCES files on every self event may wear out disks faster than desired. This ticket is to gather data on this topic, decide what hardware longevity is acceptable, and decide on next steps.

Start by gathering data on how often self events are written to PCES files and comparing the resulting disk-write volume with acceptable hardware-longevity limits. Done means the project has an agreed allowable write rate and documented next steps; the issue names no files, tests, or entry points to guide implementation.

Written by the indexing model from the issue text.