Yes you have to produce the succession certificate in order to prove that you are the proper legal successor to the assets of the deceased. You will have to file an application under section 372 of the Indian Succession Act, 1925 before the Judge of District Civil court of original jurisdiction within whose jurisdiction the deceased lastly resided or the assets lie. Application is to be made in the formt prescribed. The court fee for this may vary depending upon the value of the assets. The process of issuance of the Succession Certificate is a Summary Proceedings.
I have attached the Application for the Succession Certificate herewith.
I hope this will of some help to you.