I would suggest going for DTU. DTU is better than NSIT in almost all scenarios be it infrastructure, placements, campus life, brand value.

DTU Placement Stats for 2021-22 (till 27 Aug 2021 I. e. only 27 days)
No. Of companies : 75
No. Of offers : 566
No. Of students placed : 533
the highest CTC : 45.034 LPA (Microsoft selected 34 students + 11 PPOs)
Avg Salary : 22.11 LPA
Median Salary : 22.2 LPA
No. Of offers above 20 Lacs : 239
No. Of offers between 10 & 20 Lacs : 246

This is as per DTU's official website & can be considered one of the best in India almost close to IIIT Hyderabad CSE whose avg is around 22-23 LPA for around 120 students only. The placement season has just begun with more than 11 months still left. Choose accordingly.

DTU or Delhi Technological University and NSUT or Netaji Subhash University of Technology, Delhi are state funded technological institutes situated in the state of Delhi. Earlier both of the institutes were affiliated to Delhi University but later on both the institutes were converted to respective universities and were given the autonomous status.

Now coming to you question, comparing the two institutes will be a tough thing as the competition is really good both the institutes. The number of brilliant students received by both the colleges is increasing year by year.

So, comparing the colleges:

Infrastructure : DTU has a far more better infrastructure than NSIT. It has AC classrooms and the campus are is also bigger than NSUT.

Faculty : The faculty at both the colleges is amazing. I'll say that depends on branch to branch. The most important thing to note in a college the environment it offers. As per my research both the colleges offer an amazing environment in terms of clubs and extra-curricular activities. You can learn a lot of things even if you're not in that branch. For example : Non- computer science majors can learn a lot of coding and practice from the technical clubs and societies available in the college.

Placements : The highest package of DTU for the session 2019-20 was 1.02 crore, nearly all the students who sat for placements got placed. The average package was 11.7 lakhs. For NSUT, the highest package was 1.42 crores, here also all students got placed who sat for placements. The average package here was 7.75 lakhs per annum.

Now, talking about which one is better is really hard to say since both the institutes excel in their quality of students. But I personally think that DTU is better than NSUT.

Hope it helps.