Hello Karthik,

          Firstly, congratulations on your good rank and I'm here to help you out !

  So, basically this might happened due to your absence in counselling sessions i hope. And, since if you have missed to attend round 1, you've lost the seat there itself. But, Don't worry you have a pretty good ramk in your hand and which can help you in 2nd round of counselling either. So, hopefully all the seats will not get over in the first round and don't worry, go for the second round and you will have decent chances to get admission and if not, you will get into any other top colleges as such. So be patient and stay motivated.

Hope this helps !

Best regards !