hi satweek,

I hope you are doing well. As you know NTA started conducting JEE Mains of 300 marks in 2020 itself. So its a little hard to predict your rank with 150 marks. But by analyzing different marks vs rank list for 2020, your AIR should be around 16k - 18k. And DAIICT Gandhinagar needs at least 12k-13k rank in JEE mains(by analyzing previous years cutoff). So with 150 marks in JEE Mains DAIICT seems not possible.

I hope this answer will help.
All the best for the future!!