only one index is using, why?

I have a table in  Postgresql 9.0.1 as folllows:

                 Table "public.crmentity"

    Column    |            Type             |     Modifiers      

--------------+-----------------------------+--------------------

 crmid        | integer                     | not null

 smcreatorid  | integer                     | not null default 0

 smownerid    | integer                     | not null default 0

 modifiedby   | integer                     | not null default 0

 setype       | character varying(30)       | not null

 description  | text                        | 

 createdtime  | timestamp without time zone | not null

 modifiedtime | timestamp without time zone | not null

 viewedtime   | timestamp without time zone | 

 status       | character varying(50)       | 

 version      | integer                     | not null default 0

 presence     | integer                     | default 1

 deleted      | integer                     | not null default 0

Indexes:

    "crmentity_pkey" PRIMARY KEY, btree (crmid)

    "crmentity_createdtime_idx" btree (createdtime)

    "crmentity_modifiedby_idx" btree (modifiedby)

    "crmentity_modifiedtime_idx" btree (modifiedtime)

    "crmentity_smcreatorid_idx" btree (smcreatorid)

    "crmentity_smownerid_idx" btree (smownerid)

    "ftx_crmentity_descr" gin (to_tsvector('english'::regconfig, replace(description, '<!--'::text, '<!-'::text)))

    "crmentity_deleted_idx" btree (deleted)

    "crmentity_setype_idx" btree (setype)

Referenced by:

    TABLE "service" CONSTRAINT "fk_1_service" FOREIGN KEY (serviceid) REFERENCES crmentity(crmid) ON DELETE CASCADE

    TABLE "_cc2crmentity" CONSTRAINT "fk__cc2crmentity_crmentity" FOREIGN KEY (crm_id) REFERENCES crmentity(crmid) ON UPDATE CASCADE ON DELETE CASCADE

EXPLAIN ANALYZE on this table:

explain analyze

select *

FROM crmentity 

where  crmentity.deleted=0 and crmentity.setype='Emails' 

 Index Scan using crmentity_setype_idx on crmentity  (cost=0.00..1882.76 rows=55469 width=301) (actual time=0.058..158.564 rows=79193 loops=1)

   Index Cond: ((setype)::text = 'Emails'::text)

   Filter: (deleted = 0)

 Total runtime: 231.256 ms

(4 rows)

My question is why "crmentity_setype_idx" index is being used only. "crmentity_deleted_idx" index is not using.

Any idea please.