Hello Jyotiprakash,

As per your concern, I must tell you that your rank is very good. And eligibility criteria for M.tech for IGIT Sarang are

1. You should have pursued your B.tech degree from a recognised University with 55% for general category & 50% for reserved.
2. You should definitely have a valid GATE score card.

For more details you can refer below:

https://www.careers360.com/colleges/indira-gandhi-institute-of-technology-sarang

All the best for future endeavours.