Worshipping Devas is sathvika Shradhdha or confidence. Worshipping yakshas and Rakshashas is Rajasa interest worshipping pretha Bootha is Thamasa involvement of Shradhadha.

Sathva a pious prosperous bright shining brilliant not a paining and of purity by nature binds soul and body with pleasure wisdom resulting in attachment to good activities uplifting the soul of the dead man during such sathva mood to the world of intellectual of purity.