Looks pretty good Beren, what scope/mount was it taken with?
It is hard to guage the consistency of your pixel noise given that you only took one light frame thus used no combination process. Did you subtract a dark/s? If so and there are still lots of spurious pixels there may be something wrong with the camera?
My KAI11002 chip (mono interline) based camera had an issue when I first received it last year, my dark noise was inconsistent from frame to frame and didn't match my lights wich were also displaying random variations in pixel noise so I couldn't produce a clean calibrated image without dithering (moving the telesope slightly) between light exposures and then median combining both the darks and the lights. It turned out that the chip needed to be "re-clocked" so it went back to FLI for a quick visit.
My darks now match my lights and my lights (at -35C) are much cleaner too, no dithering is required and I can use "sum" (the best method I believe, if your subs are clean and consistent) instead of "median" or "sigma" combine in preprocessing now, no further pixel work is necessary in pre or post processing other than cosmic ray and the odd random pixel removal.
My impression is that a lot of people using the SBIG KAI11002 camera feel it of paramount importance to dither and median or sigma combine because of unclean final images otherwise, but I don't know if this is from the same issue I describe or whether your issue is related?
Just a thought..?
Mike