Pixhawk Crash magically

Anyone please help … i don’t know what is happening …here is the little description .
i use Mission Planner to control my quadcopter … i first created some mission ,upload it to pixhawk . then arm the copter and takeoff in guided mode . but when copter gain some altitude to about 5-6 meter approx . it suddenly desends rapidly and crash…
below is the bin file…

00000044.BIN (368 KB)

It looks like you started with a battery not fully charged and then it sagged to 8.1 volts upon ascent. Insufficient power to fly after that.

thank you @dkemxr … it was indeed power problem…