How can I estimate the readout time of an electronic camera shutter?
There are many ways to do this, but one of the easiest is to have a LED chaser light system in a horizontal strip.

the chaser trip will have one LED on at a time at some time period of say, 1 ms.  You vies the strip and from that you can get your integration period (number of lights on) and frame rate (sift in start position from frame to frame.

You will have to play around with number of LED's, flashing time and other parameters.

Look here for an industrial tool that does this.