Yes, Aman with 1616 rank in WBJEE exam you won't be able to get CSE in Jadavpur college so here you need to make a decision whether you want to go for brand name and stay in Jadvapur with some other branch or go in some other college with CS or IT branch.
I will recommend you to go to other government colleges with CS or IT branch because you are not choosing a brand name between an IIT or NIT. Jadavpur is a good college but studying a non-conventional branch will create problems for you in future. And plus your 1616 rank is good enough to get you admission in CS or IT branch in some other top private colleges like:
To check out in which stream you have a good chance to get admission in the colleges mentioned above you can go through the link mentioned below:
Feel free to ask if you have any more queries. All the best!!
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