equating 'x,y,z' to 'z,y,x'?

[Shankar203]

copick-utils/src/copick_utils/segmentation/segmentation_from_picks.py

Line 67 in 8936b5b

cx, cy, cz = pick.location.z / voxel_spacing, pick.location.y / voxel_spacing, pick.location.x / voxel_spacing

Here I can see, you are equating 'x,y,z' to 'z,y,x'. Why was that?
Thankyou