Hello , 

As your query is you want to know that how many seats where vacant for CSAB spot round in 2018 counselling process. I would like to tell you that all of these details are not published in internet or at any e platform through any media therefore we can't provide you with this detail. 

Apart from that in case of CSAB or any other counselling process in the spot round most of the seats are consumed or allotted to the students based on the corresponding rank and usually the number of vacant seats leftover is really low. 

Further seat which where not allotted in counselling still for those seats special round of counselling is conducted for that seat and the cut-off for those down below and if still few of the seats left then the students who apply for the management quota on that seat offline directly to the college the seats are available to those students. 

Further, if you need any other detail about the counselling process you can please let us know in the comments section below we will try to help you out. 

I hope your query is solved.

Thank you.