Former international Jhanu Hansdah (Jharkhand) and international archer Rajat Chouhan (Rajasthan) became women and men national champions in the compound section of the championship.
Deepika beat V Praneetha (Gujarat) in the final 604 set to become national champion for the sixth time on the trot.
"It was a tough match against Praneetha but I enjoyed playing tough matches and winning it," Deepika said.
Reena Kumar (Jharkhand) finished third.
More From This Section
In the men's section, a 38-year-old Muniram Tirkey (SSCB), a 1999 national champion, put up a stiff challenge to Das, who maintained the lead right from the start and did not allow the armyman to surge ahead.
Das defeated Tirkey, a native of West Bengal, 6-4, while Churucharan Besra (Bihar) trounced Gurucharan Singh (Jharkhand) to claim the bronze.
Jharkhand with 10 gold, two silver and five bronze topped the medal chart followed by SSCB with three gold, three silver and three bronze.