These are parameters used for PXL data reconstruction that are not likely to change. They are to be stored in geometry db domain. The maximum frequent that they need to be changed will be once per year. The size: 42 

/*    pxlControl                                                                                                            

*                                                                                                                           

*  Table: pxlControl                                                                                                        

*                                                                                                                           

* description: Control parameters for the PXL                                                                               

*                                                                                                                           

*/

struct pxlControl {

  unsigned long  headerToken; /* sector header token */

  unsigned long  separatorToken; /* seperator token at the end of hits data block */

  unsigned long  endToken; /* sector data end token */

  float pixelSize; /* size of one pixel */

  float centerOfDiodeZ; /* centor z of sensitive diode relative to pixel centor */

  float centerOfDiodeX; /* centor x of sensitive diode relative to pixel centor */

  octet headerLength; /* length of sector data header */

  octet hardwareIdPosition; /* position for hardware id, including sector number */

  octet chipIdStartBit; /* start bit for chip id */

  octet chipIdEndBit; /* end bit for chip id */

  octet chipIdPow; /* chipId = mChipIdPow*chipIdFromHigher16Bits+chipIdFromLower16Bits */

  octet overflowBit; /* bit for row overflow (more fired columns than can be read) */

  octet rowOrColumnFlagBit; /* bit for rowOrColumnFlag, determining "data" is row or column number */

  octet codingStartBit; /* start bit for "coding", which means how many sequential fired columns */

  octet codingEndBit; /* end bit for "coding", which means how many sequential fired columns */

  octet dataStartBit; /* start bit for "data" (row / column number depending on rowOrColumnFlag) */

  octet dataEndBit; /* end bit for "data" (row / column number depending on rowOrColumnFlag) */

  octet dummyState; /* dummy last state when a sensor ends on the lower 16 bits of a 32-bit word */

  octet sensorGoodStatusMin; /* minimum for sensor good status range */

  octet sensorGoodStatusMax; /* maximum for sensor good status range */

  octet rowColumnGoodStatus; /* row and column good status */

};