Why was Chandrayaan-3 launch delayed by 4 seconds?

The ISRO has revealed that the nominal lift-off time of Chandrayaan-3 was delayed by 4 seconds to avoid collision with a space debris. This decision was taken after a Collision Avoidance Analysis (COLA) by the ISRO. The delay avoided close approaches between a debris object and the injected satellites in their orbital phase due to overlapping operational altitudes, ISRO said.