It is a janya rāgam (derived scale), as it does not have all the seven swaras (musical notes).
It is said to evoke intense self-reflection to the listener and Karuṇa rasa (pathos).
(notes used in this scale are shuddha rishabham, shuddha madhyamam, panchamam, shuddha dhaivatham, kaisiki nishadham) Svadhya is considered a janya rāgam of Ratnangi, the 2nd Melakarta rāgam.
This Raga was created by composer Rajan Somasundaram.
This section covers the theoretical and scientific aspect of this rāgam.