I have Delhi quota and defence quota, what should be my AIR to get into DTU, NSIT , IIIT Delhi or NIT Delhi?

Here are some details regarding B.Tech admissions through defense HS quota-

Admissions through defense quota depend on your priority category:

1. Till 5th priority category - Confirmed admission with any AIR.
2. 6th priority category - Admission depends on other applicants’ rank.
3. 7th priority category - No chance in the general defense category. 

NSUT Round 5 cutoff for general defense category Delhi students (JEE Mains 2023) is given below-

I have mentioned the cutoff for NSUT. You may check the cutoffs for DTU, IIIT Delhi, and NIT Delhi in a similar manner.