Hello aspirant,

Well in CSAB Special Round counselling (spot round), one can get a seat into NITs,IIITs,GFTIs. Now to get these seats one has to attend the Special Round counselling of CSAB and for that first one has to be JEE Main qualified and should have a valid rank. To get a valid rank/ to get JEE Main qualified, one has to clear the JEE Main cutoff as per his/her category. Below I have provided 2019 JEE Main cutoff (percentile) category wise - 

• CRL : 89.75
• GEN-EWS : 78.21
• OBC-NCL : 74.31
• SC : 54.01
• ST : 44.33
• PwD : 0.11

Now as per your rank of OBC-NCL rank of 24k, you might be able get a seat in NITs,IIIT or GFTIs but exactly in which college or branch will you get that is hard to tell. Also, at this rank getting getting a seat might be difficult. Better attend the counselling process and see which colleges and branches are you getting as per your rank. 

You can go through this link and checkout the details regarding CSAB Special Round counselling : https://engineering.careers360.com/articles/csab

Good Luck !!!!