Progressions in Db — Sitar
Every Western chord the key of Db owns, charted on CGCGC — a reference layer, not this instrument's own harmony.
Db major harmonises to Db – Ebm – Fm – Gb – Ab – Bbm – C°; C# minor to C#m – D#° – E – F#m – G#m – A – B. Each chord links to its Sitar voicings — a Western harmony reference laid over an instrument whose own music has no chord progressions at all.
Set Db as Sa and the thaats engine answers a different question: not which chords harmonise it, but which of the ten classification frames could hold a raga built on it. That is the honest sitar question; this page answers the Western one instead.