MikroTik logging - syslog server

Hey all,
I’ve had some crashes with my CR router last week, it was running on 6.3 ros, and all logginf info was sent to syslog server.
What i have in logging - is 4 default rules, info;error;warning;critical;.
All of them are logged in syslog server.
But after crash or i dunno - maybe halt of system (kernel panic?) I have no events so far.
Last event is about IPSec tunnel going down, and next event is when local user rebooted it with power cord Unplugged..
So is there away to log some king of event, or event beggining of it? should i use other values?
Maybe someone has any working ideas?