As a Writer :
 

Dr. Chattopadhyay has written interesting novels, short stories and articles on subjects as varied as Calcutta cops, liberation of Bangladesh, victimology for common man, spy helping Sir Francis Drake in destroying the Spanish Armada, exploits of Old Calcutta detectives, little known people of the North-East, untold accounts of the Indian revolutionary army INA, Aryan civilization in Ancient Mesopotamia, true location of Ravana's Lanka and so on.

Moreover, he is the founder vice- president of the Indian Mythological Research Centre, Kolkata, and is the executive editor of its quarterly journal Pouraniki.
Chattopadhyay has received the Michael Modhusudan Award and Gold Medal, 2005, for his Bengali novel Nagar Rakshi (Guardians of the City) and the Uttar Banga Natya Jagat Award, 2007, for his book of poems Ekta Samay Ashe (A Time Comes). He has also been given the Bartabahak Lifetime Achievement Award in 2008.
Chattopadhyay stays with his wife Jaya at Kamala Park, Dhakuria, Kolkata. His daughter stays in New Jersey. His son also is in the USA doing Ph.D. in Physics.

Some of Chattopadyay's works are mentioned below.

Poetry ( Bengali):

  • Galita Periye (Crossing the Alley), Best Books, Kolkata, 1977.
  • Ekta Samay Ashe (A Time Comes), Patralekha, Kolkata, 2005.

Novels (Bengali):

  • Nagar Rakshi (Guardians of the City), Bharati Book Stall, Kolkata, 2002. The first ever novel onthe intimate life of Calcutta cops.
  • Kolkatar Sherlock Holmes (The Sherlock Holmes of Calcutta), Das Gupta and Sons. Kolkata, 2003. A collection of short stories on the exploits of the detectives of Old Calcutta. Rich in historical content.
  • Ekattarer Agun (Fire of Seventy-One), Modern Column and Raysons, Kolkata, 1993 and 2003. A historical fiction on the freedom struggle in Bangladesh.
  • Kruddha Pahar, Trashta Manush (Angry Hills, Frightened People), Dasgupta and Sons, Kolkata, 2007. A collection of short stories on the inhabitants of the north­eastern hills.
  • Jayadeber Punthi Rahasya, Bharati Book Stall, M.G. Road,Kolkata,2003.An action- packed thriller revolving on the theft
    of the fictitious 12th century folio epic of Poet Jaydeb.
  • Nau Bijoyer Nepatheye (Behind the Victory over the Armada), Deep Prakashan, Bidhan Sarani, Kolkata, 2008. A fiction based on the real-life spy Anthony Standen who helped Sir Francis Drake in destroying the Spanish Armada.
  • Operation Kandahar, Patra Bharati, Kolkata.