Switch Tracking off and apply noise reduction. You will now see what all the "signal evolution Tracking" fuss is about, as StarTools seems to know exactly where the noise exists in your image, snuffing it out.
Central to the module, is the 'Digital Development' parameter, which controls the strength of the development and resulting stretch.
In this case, when you launch a module that is able to apply a mask, the whole image will flash in green three times.
This too is common practice in the realm of documentary photography.
Noise grain caused by shot noise (aka Poisson noise) - the bulk of the noise astrophotographers deal with - exists on all size levels, becoming less noticeable as the size increases.
You can convert everything you see to a format you find convenient. Give it a try!