I rotated the sample. Pic 1 (before) and Pic 2(after). The measwurement was started with x,y = 322,189
folder D:\Dropbox\PCI\MapData\aztec_60_40_2_rotated\birefringence\
file ext: 20250521
This measurement stopped by itself and labview threw error 5: same as elog 4026. The file was with rotation 26deg of rotator.
The error happened at the same time when the file gets updated to NAS. So, most likely it's happening because of the file being called somewhere else (NAS in this case). It will be better to stop NAS updating on PCI in this case.
I switched the robocopy to NAS from PCI to BIGFOOT pc.
Let's see if it solves the issue.
I started a measurement of aztec60 40 2 rotated (same as previous one) yesterday afternoon that it is still on-going.
issue seems solved