According to the Tihar Jail practice, undertrials who are sentenced in a case get the formal prisoners' dress and shifted to sections in the prison meant for convicts.
Convicts Pawan Gupta and Vinay Sharma were lodged in jail number 7 while Mukesh and Akshay Thakur were sent to jail number 4.
"They have been lodged in the same cells in which they were earlier. Their jails may be changed if it is required later," an official of Tihar jail told IANS.
After getting the official white dress, the convicts would undergo a medical checkup, he said.
Depending upon the medical report, a suitable work would be allotted to them for performance during imprisonment, he said.
The four men, who were convicted on Tuesday, and were sentenced to death by a court in the brutal gang-rape of a 23-year-old woman in a moving bus on December 16, 2012.
The trial court's decision will now be sent to the Delhi High Court for endorsement and the process may take about a month, said the jail official.