For an active system, you would need practice rounds, and personnel to be trained to use the system. Also given that a bunch of these s23's are rotting in the fields in deolali camp, quite visible from the golf club road, it would be safe to assume they are decommissioned.
From what i heard out of 100,around 30-40 are still operational.No new ammo procured.Old ammo stocks being probably used up as a sort of last ride before being phased out.Its range and the weight of the shell is good for long range interdiction.