About the experimental results

hello, when I use the default configuration, the average image AUROC result is 99.1, do you know why?

Class	Image AUROC
carpet	100
grid	99.9
leather	100
tile	99.7
wood	99.3
bottle	99.9
cable	98.6
capsule	97.8
hazelnut	100
metal_nut	100
pill	97.8
screw	97.9
toothbrush	99.4
transistor	98.8
zipper	97.7
Mean	99.1