Chandigarh, Nov 9 (UNI) Diwali celebrations in Chandigarh were marred by firecracker-related injuries and fire emergencies, with seven patients requiring treatment at the Postgraduate Institute of Medical Education and Research (PGIMER), including three who underwent hand surgery, while police received 494 emergency calls during the festival, officials said on Monday. Of the 494 calls received by the Chandigarh Police Control Room on November 8, as many as 203 were related to firecrackers and 34 concerned reports of fire incidents, according to figures released by the police. The injuries reported at PGIMER included four cases in which firecrackers exploded in people's…