Hello Aspirant. I hope you are in good health. It seems you are interested in getting admission at IIST. Well, in brief I can say, the ranking varies greatly in terms of difficulty of question paper. If JEE Advanced paper is easy then you need to score more than 210 to get a stream in IIST. While if the paper is marked as difficult (as in 2016), then you will have to get above 130 . To play the game safely, try to bring your rank below 8000 in JEE Advanced.

Before ending the answer, let me give you some data.

In 2018, for General Category,

For B.Tech Aerospace Engineering, Cutoff score was 34.17%

For B.Tech Electronics and Communication Engineering, Cutoff score was 33.05%

For Dual Degree, Cutoff score was 36.39%.

Please note, This assumption is based on the fact that you are general. If you belong to any other category, kindly go through this article:

https://engineering.careers360.com/articles/iist-btech-cutoff

If you want to know whether you are eligible in IIST based on your score, you can use JEE Advanced 2021 College Predictor:

Thank you and all the best.

Hello Aspirant,

In order to get admission in IIST you should at least score more than 200.

According to the cut off rank list of IIST in 2020:

1. Aerospace Engineering : 172-775

2. Electronics and Communication Engineering in Avionics : 77-951

3. Engineering Physics (Dual Degree) : 240-882

Hope it helps.