According to the purveyors of this term, a person with a high artistic quotient is one who indulges in art that is underground, non-mainstream, quirky, eclectic or kvlt.
Indie filmmaker guy: Bad ... she listens to Lady Gaga.
Death metal guy: Oh ... can I have her number then?
Indie filmmaker guy: Are you fucking kidding me! Do you want me to repeat how low her Artistic Quotient is!