Thanks Fred,
At the moment I've been focused on developing the camera client process that will allow my tool to capture the Bias and Flat images needed for the analysis process.

Fortunately, I own a camera that has a mode switch, (it's my guide camera is an ASI-290MM Mini). So I have what I need for testing a process to detect at which gain a mode switch occurs. But feel free to put more Bias and Flat images onto the google share. I can certainly include them and run them through my process to give provide you with a more precise graph and data for your camera.

In case you are interested, here is what I found while working on the capture process:

The point at which a mode switch occurs, can actually be seen in changes of statistics in bias images. My ASI-290MM has a switch that occurs at around gain 60. In the initial tests with my tool I only took images at intervals of 20 units of gain. So my 1st graph jumped from 40 to 60, and did not show precisely where the switch occurred. So I ran some tests manually using KStars Indi control panel, using increments of just 2 units of gain, starting well below where the mode switch occurs. I simply noted values for the statistics to see trends. In the attached "ModeSwitching.png" you can see that the values for Mean and Standard Deviation were generally climbing from gain 52 through 60. But at gain 62 there is sudden drop, then the values resume climbing. So I captured another image at 61, and determined that mode switch does, in fact occur between the 60 to 61 gain settings.

So I should be code a detection process that isolate these mode switches.

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