Pixhawk dropped from sky - log files help please

My Pixhawk on TBS discovery quadcopter dropped from the sky mid flight - not sure what happened except it was a cold day? maybe cold battery? I have added the log screens concerned with volts and power?- the bin file from the sd card is too big to attach.
Any help appreciated - thanks.

Here’s a zip of the log file

Would really need to see the .bin file. Can you compress/zip it? or put it on dropbox or similar?