B.E.

I joined the college in 2021. My rank was 5780 and yes, I did not get CSE in JSSATE Noida even after 3 rounds of counseling. When I took admission the last general rank after the third round of counseling was about 3000 (or maybe lower than that). This is the optimal limit for getting CSE without fail.
But to be true to you, the number of admissions in colleges affiliated to AKTU is dropping at an alarming rate. Hence although colleges start with higher rank cutoffs in the first round of counseling, they are bound to drop the cutoffs by a great margin. So you could assume 300 to 350 drop in the rank cutoffs because colleges offer third party people to lure students to fill the vacant seats.
Fun fact: I did not even get CSE at Galgotias College of Engineering after first round counseling. ROFL!l
Btw, if I may, a personal suggestion would be to keep AKTU affiliated colleges as your last option when there's no hope left. There are many downsides to this: Curriculum is somewhat outdated and not upto the pace of today's standards, placement is worse than before and attendance is being made a mandatory criteria making a school-like environment.
All the best anyways!