With a CRL of 1.53 lakh, being an outside Delhi OBC candidate with defence quota priority VI, your chances of getting a CS-related branch like CSAM, CSD, CSSS, CSAI, or CSE at IIIT Delhi are unfortunately very low. The closing ranks for OBC and even for OBC with defence quota usually stay well below your rank, often within the top 80,000. Even with the quota, priority VI doesn’t offer as much relaxation as the higher priorities.

So realistically, it's unlikely you'll get a CS branch at IIIT Delhi with this rank this year. You might want to keep some backup options in mind or consider a drop year if IIIT Delhi is your goal.