Which branch would I get in CUSAT with 4413 rank?

You can perhaps try out all the branches as well as the counseling rounds. In case your bad luck does not allow you to secure any other option anywhere else, try and give the spot rounds a shot. Do not underestimate them.

Apart from that, try to go for the NRI quota and then grab your admission seat. But the NRI seat comes with a very heavy price to pay. It is very expensive. I believe you may get a seat in EC but predicting a branch, in particular, would be a little too much as each year, the rush with almost every branch is pretty intense.