The Arizona judge who sentenced Supreme diva Diana Ross to 48 hours behind bars for driving under the influence isn't happy with how his order was carried out -- and now he wants her to go back to jail.

Rather than serving her sentence in Arizona, Ross, 59, arranged for her jail time to be in Greenwich, Conn., where she lives.

But after looking into her incarceration, Tucson City Court Magistrate T. Jay Cranshaw made the unfortunate discovery that in true star fashion, Ross left and returned to the Greenwich jail a number of times over three days, the Arizona Daily Star newspaper reports.

Under Arizona law, such an open-door policy does not constitute jail time, as DUI defendants have to spend at least 24 consecutive hours in custody.

In seeking an accounting of Ross's time in the slammer, Cranshaw reportedly was informed that her first and longest stretch came on Monday, Feb. 9, when she checked into the Greenwich Police Department at 5:30 p.m. and remained until about 4 p.m. the next day -- a 22-2/3-hour visit by the Daily Star's tally.

She then returned Tuesday at about 6 p.m. and left again at 8:30 p.m., this time a 2-2/3-hour stretch, which was followed up the next day, Wednesday, Feb. 11, at 8 a.m., at which time she stayed put for 22 hours -- until 6 a.m. Thursday.

Cranshaw, therefore, has ordered Ross to return to Tucson, to serve 48 hours in jail. And by that, he means 48 hours in a row, reports the Associated Press -- which quotes attorneys for the singer as saying they may ask the ticked-off magistrate to reconsider.