Weaver, Matt 2018-11-18, 6:14 PMDubrovin, Mikhail;O'Grady, Paul Christopher
Here's the geometry I'm now using (below).  Note that pixel(0,0) 
for each of the elements below is in the lower right hand corner.
We'll know the quadrant layout for sure when we get the radioactive source exposure on Monday.
  //  (Epix10ka2m)
  //         |
  //  Quad 3 | Quad 0      Quad 1 is rotated  90d clockwise
  //  -------+--------     Quad 2 is rotated 180d clockwise
  //  Quad 2 | Quad 1      Quad 3 is rotated 270d clockwise
  //         |
  //
  //  (Quad 0)
  //         |
  //  Elem 0 | Elem 1
  //  -------+--------     No rotations
  //  Elem 2 | Elem 3
  //         |
  //
The ASICs did not move. The change is that the (352,384) 
array has pixel (0,0) in the lower right hand corner (in ASIC2).
  //  (Elem 0)
  //         |
  //  ASIC 20 | ASIC 13
  //  -------+--------     No rotations
  //  ASIC 31 | ASIC 2
  //         |
  //
  //  (Elem 0-3 pixel array)
  //                    row increasing
  //                          ^
  //                          |
  //                          |
  //  column increasing <-- (0,0)