They also took out a march to protest the incident in which a doctor was allegedly assaulted by a patient's relatives last night.
The doctors, who are demanding adequate security measures to prevent such incidents from happening in the future, alleged that the relatives of a patient "manhandled" one of them on duty.
The relatives had blamed the doctors for allegedly not attending to the patient brought to the emergency wing.
"Resident doctors of PGIMER, Chandigarh went on an indefinite flash strike on 22.8.2016. Keeping this in view, it was decided to reduce the OPD registration timings. However, registration timings of Radiotherapy OPD dealing with cancer patients was not reduced...ICU emergency and trauma services functioned normally. Emergency OPD, Trauma OPD as well as emergency OT and trauma OT services functioned as usual. The diagnostic services also functioned normally," PGIMER's official spokesperson said in a release.