Hi.am an engineering graduate and i wish to pursue masters in Astrophysics.where can i get the complete info?

Astrophysics graduate programs require classes equivalent to a bachelors in physics. Your engineering program probably didn't prepare you for graduate level physics classes, such as E&M or quantum mechanics, which astrophysicists do need to take. You're going to have to take a few more classes before you're qualified to apply for graduate programs, and you're going to have to learn enough physics to do well on the Physics GRE.