Yes absolutely it is worth doing mtech from IITs in cse branch.
You will get many opportunities there to get yourself placed in product based company and many mncs recruit students. You will get a better crowd there.
For more informtion IIT take admission on the basis of gate rank.
For knowing about your chances of getting admission you can go through the below mentioned link:-
GATE 2020 College Predictor with PSU Chances – Know your admission cha ...
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