Years ago I learned that most managers are so remarkably ignorant of what good IT workers do, you know preventative work that ensures users can do their jobs without interruption, that the only way to get ahead is to be a bad IT worker.
Meaning if you let all sorts of bad stuff happen and then rush in and be the savior of the day you will be rewarded with promotions and bonuses.
A few years ago, just before I left my last job, I demanded a job review having gone 6 years without one. I got to sit through my review by the VP in charge of the division I supported and my direct IT boss from Denton Tx, only to be criticized for not socializing with some techs who came up from Denton to help with a move of the office 80 mile to a new city. I had elected to do my appointed tasks for the move, baby the servers and double check backups prior to taking them down packing them up and reinstalling them in the new sites server room.
Had I done the socializing I would have ignored my duty to the corporation but not been f*cked over during the review. If the servers had not come up I would likely have been heralded as a saint had I been able to resurect them too.
It makes no sense but my advice is don't bother with looking at meaningful metrics unless it is to satisfy your own needs. Focus on the only metric management sees... Crisis frequency and crisis resolution... be the superhero!