Hi Jeevitha.

Congratulations on securing this rank.

Based on the closing rank for CSE in St. Joseph's College of Engineering in the year 2018, I am sorry to say but you might not get CSE in this college. 

I would suggest you to visit https://engineering.careers360.com/articles/tnea-cutoff to get information regarding the cutoffs of this as well as other different colleges in the year 2018 and shortlist the ones where you can get admission with your rank. Having said that, I will also say that the cutoffs vary every year depending on the number of candidates, their rank, the number of seats available, etc.

The codes for the participating institutes are provided in this link : https://images.careers360.mobi/sites/default/files/TNEA-participating-college_cut%20out%202017.pdf

Hope that helped.

All the best!