adis16365 drift



I am using an ADIS 16365 in my gps adied ins system. When powered on and keep the system still,  the drift of the gyro is small, it is about 0.1~0.2 degree per second. When I shake the system with my hand and then put it down, the drift of the gyro become about 10 degree per second. Is it reasonable? is the mems demaged?  

Waiting for your reply.  Thank u.