Sai Saraswathi Kalavathi (Sathya)
Lord Sai who is residing in Parthi is none other than Goddess Saraswathi, the one who is personification of all types of Arts and the one who enjoys the Art of Music.
The common Carnatic convention for R2 is G1. The given convention is employed for better understanding.
Highest Note: R2 / D (higher octave)