HA Crashed - what to look for?

Tonight my HA crashed. Server was accessable through CLI and restarted HA application by using sudo docker restart homeassistant

before doing the restart I ran sudo docker stats and noticed that the CPU for HA was 100%

Is there is something I can check to know what caused the crashed? in the home-assistant.log there isnt much info. Also I checked the ZWave log file (OZW_log.txt) and the devices kept sending the info while HA was crashed, although data was not written in the db.

Any insights?