Sastry was selected for the National Fellowship of the
Indian Council of Historical Research. Sastry was one of the two persons selected for the fellowship in the year 2015. The ICHR is a premier historical research body under the
HRD ministry. Dr Sastry was awarded a PhD by
Karnataka University for his work on the history of the
Kakatiya dynasty and early socio-economic conditions of
Andhra Pradesh from 500 BC to 1000 AD. He worked with the Department of Archaeology and Museums until 1981. He conducted village-wise epigraphical surveys in the
Telangana districts. His contributions to Telugu historical research was mentioned in the pre-release events of the movie
Gautamiputra Satakarani, which was based on the archaeological and historical research on the
Satavahana dynasty that he conducted. ==Works==