Check Presence of particular archivelog in rman backup

RMAN>  list backup of archivelog sequence=4666 thread 1 ;

using target database control file instead of recovery catalog

List of Backup Sets
===================

BS Key  Size
------- ----------
160401  14.26G

  List of Archived Logs in backup set 160401
  Thrd Seq     Low SCN    Low Time  Next SCN   Next Time
  ---- ------- ---------- --------- ---------- ---------
  1    4666    68644635802 30-JAN-15 68655657966 30-JAN-15

  Backup Set Copy #1 of backup set 160401
  Device Type Elapsed Time Completion Time Compressed Tag
  ----------- ------------ --------------- ---------- ---
  DISK        00:02:08     30-JAN-15       NO         TAG20150130T081019

    List of Backup Pieces for backup set 160401 Copy #1
    BP Key  Pc# Status      Piece Name
    ------- --- ----------- ----------
    252655  1   EXPIRED     /backup/oracle/Sumit/Sumit_archivelog_ucpu0j77_1_1_20150130

  Backup Set Copy #2 of backup set 160401
  Device Type Elapsed Time Completion Time Compressed Tag
  ----------- ------------ --------------- ---------- ---
  DISK        00:02:08     03-FEB-15       NO         TAG20150130T081019

    List of Backup Pieces for backup set 160401 Copy #2
    BP Key  Pc# Status      Piece Name
    ------- --- ----------- ----------
    252672  1   AVAILABLE   /backups/oracle/Sumit/Sumit_archivelog_ucpu0j77_1_1_20150130