I just opened up my new ASI533 today, did some indoor tests and wanted to ask and confirm whether random horizontal banding is normal for this sensor, as I read anecdotal reports elsewhere that it was clean and structureless.
Below are 3 sets of 3 continuous bias exposures showing random horizontal banding at default unity gain settings (Gain 100, Offset 70, USB Limit 40), with NINA native driver, NINA ASCOM driver and ASIImg at -5C. Power supply was a celestron powertank pro, USB cable was the one included in the box and laptop was plugged into an imuto 19V output power bank that I've been using with my laptop in the field for a couple of years now.
Here are 3 continuous BIAS frames with NINA Native Driver: Continued next post.
At Gain 0, the banding is much more pronounced and at Gain 360, minimal. It is also present in longer Dark exposures - I can provide screenshots and/or FITS files on request.
I'm not making a fuss or a complaint, simply asking if this is normal behavior for this sensor.