Hi Bryan,
first thanks for showing that filter feature, hadn't noticed that earlier. Though the event insights was fixed to work in our env just few weeks ago, so far we have been without this view at all. Several cases been opened during the years.
But yes, I can open a bit more why I am asking these. I have had several discussions and ideas open to get some more information out from SL1. I am not too worried about events, those are the ones that every user sees, and there are processes to work with those. But I am more worried about what I do not see, the alert messages that are not manifested as events. This insight view now gives me some kind of idea that customerA has been getting lets say 400k alerts during last 24h and even some kind of trend graph for that metric. But to get an answer for "who sends those?" "give me top 10 syslog shouters", "what devices are sending trap alerts", "is the noise coming from one or several devices", etc. So seeing under the hood, the data that is pretty difficult to see. Customer has 10k devices, some of them are sending a constant flood of traps/syslogs that not triggering the system level "too much stuff coming" events. Not an easy task to go and look for each device's Logs page to find which are noisy ones.
Thanks for developing this event_insight database that does a lot of that statistics, as said the UI/calculations has not worked for us until few weeks ago, so we have done lots of that studying from that database which is really a gem for this information. And as said the Event Insights does not answer these kind of questions. It is still "just" a high level, general, view of the big picture, and we need to see behind it.