Dear Aspirant 

First of all Congratulating you on your nice performance and I would like to tell you that based on your rank in wbjee you are surely going to get Jadavpur university. Although it is difficult to predict that whether you will get computer science engineering or not and will depend on number of student taking admissions,whose rank is better than you. 

Good luck for your counselling procedure :)

Feel free to ask if you have any further queries.