The nDepth export will always include every possible column, and there's not a way to change that. As a work-around, have you considered making an Excel Macro by recording one of your editing sessions and then replaying that on future exports?
Also, it looks like the events you're interested in are some sort of File Audit. Have you looked into customizing reports from the Reports Console and running that on a schedule instead to isolate the data you care about?