I don’t think you’ll find a raw average software. To see tbr noise you have to demoasic the data, and once a raw is demoasiced, it isn’t raw anymore.
I usually do this:
- Work on the image in RT until you’re happy with it.
- Copy the profile to the other images, then export the images as high bit depth tif files.
- Then follow this tutorial: https://patdavid.net/2013/05/noise-removal-in-photos-with-median_6/