Yes, you can opt for IIST college for B.tech admissions.

In order to take admission you need to qualify JEE Advanced exam.

To be eligible for IIST in general category you need to get 20% aggregate marks in your exam and 5% individually marks  in PCM.

Below are the branches in IIST with the cut-off-

Aerospace Engineering- 4450 (Approx. 220 marks)
Avionics- 5689 (Approx. 200 marks)
Dual Degree- 5267 (Approx. 210 marks)