"This Bureau of Justice Statistics (BJS) report presents an overview of case processing in the Federal criminal justice system. The data presented are compiled from the BJS Federal Justice Statistics Program (FJSP) database. The FJSP database includes data provided by the Administrative Office of the U.S. Courts, the Executive Office for the U.S. Attorneys, the Federal Bureau of Prisons, and the U.S. Sentencing Commission. The Administrative Office of the U.S. Courts, in addition to providing data describing defendants in cases processed by the Federal judiciary, provides data describing defendants processed by the Federal pretrial services agencies and the Federal probation and supervision service. The data provided by the agencies are archived for public use at the National Archive of Criminal Justice Data (ICPSR 9296)."
Office of Justice Programs, Bureau of Justice Statistics: http://www.ojp.usdoj.gov/bjs/