Generally people undertaking a fast for a specific purpose do so for a period covering a week of seven days or a mandalam covering 48 days.  In Kariseri, devotees undertake a fasting 28 days ending with the Tiruvona star day in the month of Margazhi – December-January, to realize their prayers.  Special pujas are performed to the Lord this day.  Pujas are performed specially for relief from the adverse aspects of the planets. It is the faith of the devotees that consuming the water (the abishk theertha) would cure them from ailments.

Lord Lakshmi Narayana graces in a sitting form having Mahalakshmi Thayar on His lap.  There are deities around the prakara.

Some Siddhas (enlightened souls) living in the Chaturagiri hills near Vatrairuppu made a Vishnu statue with rare herbas mex called Navapashana  and were worshipping Him.  The statue was washed away in floods once and reached the Kariseri village.  The public, with great joy of finding a rare Vishnu idol, built a temple and began perform pujas and worship.