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• Assume that the detector image is produced by a set of tiles (a.k.a., segments, sensorssegment, section, 2x1, sensor, Si-pixel matrix, etc).
• Each tile has well defined by design geometry of pixels, which does not need in separate calibration. (Uniform matrix-type geometry is preferable, but  other geometry can be handled, for example like in CSPAD 2x1 sensor)
• Pixel center coordinate for each tile can be defined as a look-up table in its "natural" coordinate system. For example, CSPAD 2x1 tile geometry is defined as:

     (Xmin,Ymax)      ^ Y          (Xmax,Ymax)
     (0,0)            |            (0,387)
        ------------------------------
        |             |              |
        |             |              |
        |             |              |
      --|-------------+--------------|----> X
        |             |              |
        |             |              |
        |             |              |
        ------------------------------
     (184,0)          |           (184,387)
     (Xmin,Ymin)                  (Xmax,Ymin)

Memory model

It is assumed that each tile is presented in DAQ or offline data by a single block of memory.  Uniform matrix-type geometry of pixel array is preferable, but  other geometry can be handled, for example like in CSPAD 2x1 sensor. Detector data record consists of consecutive tile-blocks, in accordance with numeration adopted by DAQ. For effective memory management, some of the tile-blocks may be missing due to current detector configuration. Available configuration of the detector tile-blocks should be marked in a  bit-mask word in position order (bit position from lower to higher is associated with the tile number in DAQ).

Optical measurements

• Optical measurements provide 3-d coordinates of 4 corners for all tiles in the detector in some arbitrary microscope plane which coincides with detector imaging array (tiles) plane within precision of installation.
• Tile corner coordinates do not necessarily coincide with corner pixel centers or edges.
• Numeration of tiles should not necessarily coincide with their numeration in DAQ, but it should be done in fixed order or with indication of tile numbers:

• Optical measurements provide a list of coordinates for all sensor points:

  Tile #

  Point #	X[µm]	Y[µm]	Y[µm]

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• the list of coordinates obtained in optical measurements and ,
• tile ideal geometry, and
• designed orientation of tiles in the detector.

The tile location and orientation can be defined by the table of records

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