
Sure you can check each constituent log - System, Application, and a Crimson/App-log one by one, and mentally compare the time sequence across the logs.
But the handy bit to this chunk of code is that it quickly & neatly pulls all of the events together into one csv, sorted into time sequence, ready for quick review: Pop the Csv open, and you can directly see the events that occurred just ahead of your app's issues - possibly spot the OS/System-level item that actually was the actual root of the problem. :)