cassandra cluster status when a node goes down

1)
When all 3 nodes in the cluster up

# nodetool status

Datacenter: datacenter1
=======================
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
--  Address       Load       Tokens  Owns (effective)  Host ID                               Rack
UN  10.140.15.59  75.4 KB    256     100.0%            a07836a2-8c56-4da7-803d-4389f87a4854  rack1
UN  10.140.15.61  256.7 KB   256     100.0%            00c51f6a-2d08-4b27-81f9-b9754b6b0b66  rack1
UN  10.140.15.60  90.74 KB   256     100.0%            d89d9cd8-d154-43d9-97ec-6b827c9a7ced  rack1

2)
When the node 10.140.15.61 is down

# nodetool status

Datacenter: datacenter1
=======================
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
--  Address       Load       Tokens  Owns (effective)  Host ID                               Rack
UN  10.140.15.59  75.4 KB    256     100.0%            a07836a2-8c56-4da7-803d-4389f87a4854  rack1
DN  10.140.15.61  256.7 KB   256     100.0%            00c51f6a-2d08-4b27-81f9-b9754b6b0b66  rack1
UN  10.140.15.60  90.74 KB   256     100.0%            d89d9cd8-d154-43d9-97ec-6b827c9a7ced  rack1