The only logs of that sort that I'm aware of is the SMART counter for unexpected power loss. M.2 SSDs are not at all graceful about handling voltage droop, and

The only logs of that sort that I'm aware of is the SMART counter for unexpected power loss. M.2 SSDs are not at all graceful about handling voltage droop, and I don't think I've ever seen one even attempt to automatically lower its power state (and thus peak power draw) in response to low input voltage. They just stop responding, and sometimes require a full power cycle rather than just a reboot. And since the maximum power draw information that SSDs provide to the host is unreliable, you need expensive measurement equipment to determine whether a SSD brown-out is more the fault of the host not providing enough power, or the SSD drawing more power than is reasonable.