" multiply censored data." I didn't get this part.
MINITAB has option for checking distribution of the survival data ( data with censors).
Otherwise, hope you have right censored data. In that case you can find the empircal distribution(for kaplan meir estimates, see this link http://faculty.vassar.edu/lowry/survival.html) and compare with the standard distribution and you can do Kolmogrov Smirnoff test.