Debasis studied at Indian Statistical Institute. In 1982 he received a degree of the Bachelor in the sphere of Statistics. In two year he became a Master of Statistics. In 1988 Debasis was a student of the University of Pittsburgh in Pittsburgh, Pennsylvania, United States. He received a degree of the Master of Arts. In a year Debasis studied at Pennsylvania State University in State College, Pennsylvania, United States. He became a Doctor of Philosophy.
Debasis worked as a statistical consultant in Presbyterian Hospital in New York, United States from 1985 to 1988. In a year he became an assistant professor at the University of Texas in Dallas, Texas, United States. He held this position until 1990. In 1990 Debasisworked at Technology Indian Institute in Kanpur, Uttar Pradesh, India. Since 1999 he worked as a research consultant in Delhi Public School in Kolkata, West Bengal, India.
Debasis married to Ranjana Pal on January 26, 1992. They have a child: Debanjana.