Hi aspirant, since you have got 63.8% in your entrance + 12 so on this percentile it is difficult to get into Panjab University, Chandigarh until you have or belong to any of the reserve creteria it it would be so than there may be chances that you may enroll yourself in the Panjab University, otherwise you can also use your JEE mains result if it is good enough that can.let you to get admission in the University.

Thank You.