All scannable fragments are randomly placed during each game, but I'm fairly certain the crate contents are always the same.
The crate contents ARE scannable fragments, WTF are you talking about?
I'm talking about those crates that you have to click on to automatically get an item on the tech tree. Long, flat, thin, emit a light of their own, stretch out when you click on them to reveal a data card, that ring any bells?
I'll admit that I've forgotten what their true name is in-game, but despite that I still see a reason to tell you this for the umpteenth time:
Learn. How. To. Read. This is not the first time you fail at reading comprehension, and it won't be the last time I'm afraid.