Channel Problems
From Hall A Wiki
It appears there are problems with the middle channels on the X direction and the left channels on the Y direction. These appear to be directly related to the cards used to take their input. Switching out the X cards did not show a difference in results.
Running a source near the center of the detector reveals that the X direction is not devoid of readings.
Running a source near the left in the Y direction reveals it is also capable of taking readings, though very reduced compared to the X.