hi pappu,

Minimum Cat percentile required by IIT Delhi and IIT Kharagpur for ST candidate is:

For IIT Delhi it remains around 60 percentile in every year. With this percentile you will receive a call for admission by IIT Delhi. But this doesn't ensure you the admission. To increase your chances get as much percentile as you can.

Where as is IIT Kharagpur you can expect a call with percentile 75 and above.

NOT only CAT percentile, these both IITs take a good look at your profile also.

I hope this answer will help you.

All the best for the future.