Repeated detector frames multiply measured slots. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.

highlighted = computed this step

One frame has checked slots

One detector frame has 20 pixel slots.

Nframe=20N_{\text{frame}}=20
Indexed throughputIndexed measurements become exact count budgets.indexed readout

Frames multiply measured slots

With 3 frames, the measured slot count is 60. Detector exposure, noise, and saturation are outside this count.

Nslots=203=60N_{\text{slots}}=20\cdot3=60
Indexed throughputIndexed measurements become exact count budgets.indexed readout