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• Quads are aligned individually using their natural coordinates as in from the optical measurement (top-left corner is an origin, nearest point to the beam spot).
• Sensors are aligned based on their center point position from optical measutement. Center coordinates are calculated as an average of four corners.
• Center coordinates were float numbers with precision of 1 um.
• Additional hand-made offset is applied based on deviation plots (offset in integer number of pixels).
• Tilt angles were taken into account.
• After sensor translation and tilt-rotation coordinates are rounded to integer numbers in order to insert everything in uniform 2-D array.

Earlier versions of CSPad alignment

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