Some thing wrong in asm disks, showing all disk header_status as CANDIDATE though some of the disks

Grid version is 11.2.0.4.

SQL> select name,free_mb,total_mb from v$asm_diskgroup;

NAME                              FREE_MB   TOTAL_MB

------------------------------ ---------- ----------

DATA                                    0          0

FRA                                     0          0

SQL> select GROUP_NUMBER,DISK_NUMBER,STATE,MOUNT_STATUS,HEADER_STATUS,NAME,PATH from v$asm_disk;

GROUP_NUMBER DISK_NUMBER STATE    MOUNT_S HEADER_STATU NAME                           PATH

------------ ----------- -------- ------- ------------ ------------------------------ ------------------------------------------------------------

           0           0 NORMAL   CLOSED  CANDIDATE                                   /dev/asm-DATA-36000c294b047eaedc90ddd957968bf18

           0           1 NORMAL   CLOSED  CANDIDATE                                   /dev/asm-FRA-36000c29176f5d07be51c1e28f8aa709f

           1           2 NORMAL   CACHED  CANDIDATE    DATA_0002                      /dev/asm-DATA-36000c29b8dff8965a003fe28545bcd1d

           1           3 NORMAL   CACHED  CANDIDATE    DATA_0003                      /dev/asm-DATA-36000c29f496f7379116031c16b6d8b14