Troubleshooting BIG-IP Power Failure

Hello,

I have the qkview from a device which experienced a power failure. The qkview is currently uploaded to ihealth. Please, which logs am I supposed to check to see the logged info regarding the power failure?

I searched for the keyword "power" in the logs and turned up one entry in the var/log/ltm log but couldn't locate anything descriptive about power failure. Please help, thanks very much.