Hi Mukesh, 

         In the previous years the closing rank for IIST ECE specialization in Avionics, is around 470 - 500 in OBC category. To get this rank you need a score close to 230. So you may not get the course with your course. Hope this helps. Good luck!!! 

Hi there,
Hope you are doing well.
the cutoff for Electronics and Communication Engineering with specialisation in Avionics for OBC Category was 27.22 per cent marks in JEE Advanced i.e. 98 marks.
So, you have narrow chances to get IIST.
Hope it would help.

Thank You