Mobed Karteer (Zoroasterian Priest Karteer) founded it, whom the city was named after. Kartil or Cartele is neo-Persian pronunciation for ancient Karteer and Abad  is the equivalent of Burg in European countries.
The founder of the city was Mobed Karteer (Zoroasterian Priest Karteer), who gave the city its name.  Kartil or Cartele is a modern Persian pronunciation of the ancient name Karteer, while Abad is like Burg in European countries.