An X-ray sensing apparatus includes a detector array configured to generate a plurality of signals in response to x-rays incident on the detector array during an exposure period a high-clock logic device communicatively coupled to the detector array a low-clock logic device communicatively coupled to the high-clock logic device an accelerometer communicatively coupled to the low-clock logic device and a processor communicatively coupled to the high-clock logic device. The low-clock logic device is configured to receive an acceleration signal from the accelerometer determine that the acceleration signal corresponds to a wake gesture and, in response to determining that the acceleration signal corresponds to the wake gesture, send a first power state change signal to the processor and a second power state change signal to the high-clock logic device.
