From the show version it seems that the switch has rebooted on its own because of the power:
System returned to ROM by power-on
System restarted at 02:11:33 CET Fri Mar 27 2015
System image file is "bootflash:cat4500e-ipbase-mz.122-53.SG2.bin
We know from the crashdump that there was a crash few minutes before the restart:
Crashdump version: 1
Last crash: 03/27/2015 02:09:45
Build: 12.2(53)SG2 IPBASE
Some of the suspect values in the crashdump probably can be the following:
MCSR: 0x20000000 <--- non-zero value!
L1 Data Cache Parity Errors: 1df0015 <--- non-zero value!