1. A method of analyzing a digital camera, the digital camera comprising an image sensor having a plurality of pixels that generate image data, the method comprising: generating first image data using the image sensor; performing a first analysis on at least one portion of the first image data; generating second image data using the image sensor; performing a second analysis on the at least one portion of the second image data; comparing results of the first analysis to results of the second analysis; and generating a signal indicating a fault with the digital camera in response to the first analysis differing from the second analysis by a predetermined amount.