Well it’s difficult to quantify really.
I’ll usually judge my tracks based on how good the mix is, how many mistakes I made during the recording and if they kill the mood, how close did I get to what I set out to do, that sort of thing. Technical shit, mostly. Of course the best way is to put it out in the world and see how people take to it, as there’s no better judge of turds than my fellow elektronauts. For this, you need to be ready to realise and not care that most of your tracks are probably shit.
You’re right though, the fact that my tracks are basically just semi improvised live jams and I’m pretty time limited means I don’t really have the headspace to give a shit about much more than whether a track bangs or not.
I hate UK garage, but if I made a UK garage track that banged hard, I’d be well happy about it.