To be eligible for the Post Graduate Diploma degree at Dikhowmukh College Sibsagar, candidates must have completed their undergraduate degree from a recognized university in any discipline. The minimum aggregate score required may vary depending on the specific program, but generally, a minimum of 50% marks is expected. Additionally, candidates may need to clear the entrance examination conducted by the college or meet any other specific requirements set by the program they are applying for. It is important for applicants to thoroughly review the college's website or prospectus for detailed eligibility criteria and any additional requirements that may be applicable.