The Moolavar is Thothaatrinathan seen in seated posture facing east. The utsavar is Deivanayagan. The oil that is used for abhishekam daily is poured into a well (25'x15') in the temple. This oil is said to cure devotees of all diseases.
The king of Sindhu had taken the form of a dog due to the curse of Kusaasana maharishi. On bathing in the Chaetru -thaamarai Theertham he regained his original form.
When Lord Vishnu vanquished the asuras Madhu Kaidabhar, Boomi Devi felt she had become unclean & prayed to the Lord to purify her. The Lord blessed & purified Boomi Devi. There is an idol of Lord Vishnu seated along with Sridevi & Boodevi on the Srivaigunda vimaanam.
Urvasi & Tilottamai did penance at this sthalam & pleased the Lord by their bakthi. There are idols of the two maidens with venn saamaram on either side of the Lord.
Thaayaar - Chirivaramangai Thaayaar, Ubhaya Naachiaar on either side.
Theertham - Indra Theertham, Chaetru-thaamarai Theertham.
Total of 11 Paasurams.