This read-only 8-byte bit array flags the presence of a failure in one of eight specific Power-On Self Tests, named bit by bit: System Board, CPU Buffer, Notify RAM, Supervisor ASIC, Data Buffer, Buffer Table, Satellite ASIC, and Front End. Because each bit maps to one specific hardware subsystem tested at power-on, this object lets an admin identify exactly which internal component failed self-test without console access to the boot log, so bit 3 alone being set means the Supervisor ASIC specifically failed, not a generic something's-wrong indication. A value with only bit 6, Satellite ASIC Failure, set would point a technician straight at replacing or reseating the satellite ASIC daughtercard rather than the whole supervisor module.