Hello Sournamalya,
The cutoffs for ECE branch in CIT in the year 2018 was around 345-1856 in OC and 1884-2134 in BC category. So with your rank, you won't be able to get ECE in CIT. You can predict which colleges you can get with your rank from this link:
https://engineering.careers360.com/tnea-college-predictor
Best Wishes!
College Comparison based on Courses, Placement, Rank, Fee
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile