Transposed to C:C Db E F G Ab B CIn numbers: 1 b2 3 4 5 b6 7The mode is called Hejaz-kar. It is a variant of Hejaz: which has a flat 7 or Bb. Most notable example of Hejaz is Hava Nagila. Adding a sharp 4 to Hejaz-kar would give you Purvi. You see these modes a lot in music from the Middle-East.