The authoritative information on post bans is in the post that's linked to in the message you see about the ban. A summary is:
The ban is completely automatic, there's nothing a moderator can do about it.
The ban is based on all your questions, including deleted ones. You have 5 deleted questions, 3 of them have 0 votes, 2 are -ive.
A few downvoted ...
As I said in a comment there, it would make it clearer if you would define the time period you're actually interested in and ask how to configure that in Prometheus. I think that's what you mean, but since your example Nagios time period is "all the time," I'm not sure.
Use the (fairly) recently introduced "Custom Question Lists" feature:
On the Questions page, click the Filter button
Add the tags you want to whitelist to the "Tagged with:" list
Click the Save custom filter button and give it a name like "My Whitelist"
Go back to the Questions page, click the "More" dropdown and select your custom filter