He coauthored Suvarña Prabhá with Çarat Chandra Das, published in Calcutta in 1898. He also worked on Buddhist Texts of the Northern and Southern Schools in 1897.
Çastri's work primarily centered on Buddhist texts and literature, with a particular emphasis on comparing Northern and Southern Buddhist traditions.
Çastri's scholarly activities took place during a period of renewed interest in Buddhist studies in India. This era saw increased archaeological research and textual analysis of Buddhist materials, contributing to a deeper understanding of Buddhism's history and development in the region.