First of all congratulations for your result. The cutoffs change every year as it depends on various factors. And Jadavpur University is among the top government Engineering colleges of India. So the cutoffs are enough higher compared to other colleges. Also Computer Science and Engineering and Information Technology both are among most demanded branches. As you have mentioned your category i.e. General Pwd, then the cutoff for this category for Computer science lies around 7350 in GMR after round 3 of counselling. And for Information Technology, the closing rank is around GMR 26450. Now this is based on previous few years' cutoffs and this year the cutoffs might change. You can use our WBJEE college Predictor tool to know where you have good chances of getting admission
http://www.careers360.com/wbjee-college-predictor