Dear student,

If you belong from SC category , then you must have to secure a very good rank, as well as marks in jee advanced to get CSE in any one of the top 10 IITs .

Now, for getting a sure seat in the 10th ranked iit, you have to secure atleast under 170  to 200 rank for getting cse.
So, for getting 170 sc rank you must have to score atleast 140 marks in jee advanced.

Then you can imagine that for getting cse in top iits like iit madras, iit Delhi or iit Bombay you have to secure under 50 sc rank, that is your jee advanced marks must be above 160.
So, I think you have got a rough idea of marks or ranks for getting a sure seat in cse in top 10 iits.

All the best !