Institute of Engineering and Management Ranking

The Institute of Engineering and Management (IEM) in Kolkata was ranked 239 out of 394 colleges in India for B.Tech in 2023 . Additionally, in the National Institutional Ranking Framework (NIRF) rankings, IEM was positioned at 169 in the 'Engineering' category for the year 2021 [1]. 

The Institute of Engineering and Management was ranked #151 and #169 by the National Institutional Ranking Framework (NIRF) in the 'Engineering' category for the years 2023 and 2021 respectively

It will be very difficult to get computer Science engineering with this rank. But, you will get information technology for sure with this rank. Placement for both computer Science engineering and information technology are similar, even electronics and communication engineering is also good and will be easily available with this rank. So, while filling the counselling form select CSE, IT, ECE in the same sequence. If you are 100% determined for computer Science engineering, then apply for techno India salt lake, Haldia, Heritage also at the time of counselling.

Friend, your rank is very good, And it's sure that you will be getting Government Colleges in Bengal. ECE Branch is good, I prefer you to go for it. It will give you placements in telecommunication companies like Reliance, Airtel etc. online shopping industry. And many more. Go for the link below to find some Colleges on the basis of your WBJEE merit:
https://googleweblight.com/i?u=https://www.shiksha.com/b-tech/resources/wbjee-college-predictor&hl=en-IN&grqid=IryXv5Dn
Best of luck for the future.

From the analysis of previous counselling process, if you wait till the 3rd round, you might get civil in Heritage with this rank.
You will get Applied Electronics in Heritage College with this rank.
In IEM, there is no scope for any branches.