The various programmes available through CDAC are:

• Post Graduate Diploma in Geoinformatics
• Post Graduate Diploma in Advanced Computing
• Post Graduate Diploma in Mobile Computing
• Post Graduate Diploma in Artificial Intelligence
• Post Graduate Diploma in Big Data Analytics
• Post Graduate Diploma in IT Infrastructure, Systems & Security
• Post Graduate Diploma in Internet of Things
• Post Graduate Diploma in Advanced Secure Software Development
• Post Graduate Diploma in HPC System Administration
• Post Graduate Diploma in Embedded Systems Design
• Post Graduate Diploma in VLSI Design
• Post Graduate Diploma in Biomedical Instrumentation & Health Informatics

You can check the individual course eligibility criteria at https://www.cdac.in/index.aspx?id=edu_acts_PGDiplomaAdmission#  but in general you need either a MCA or a 4 year Bachelor's degree programme to pursue your course here. You are eligible if BCA is a 4 year programme. But because BCA is s 3 year Bachelor's programme, unfortunately you need to complete MCA to be able to pursue courses here.