sTGC offline DQ: sTGC strip efficiency

Adding sTGC strip efficiency.

Efficiency is computed per layer in each multiplet for the strip channel.

Three cases are considered:

  • Fully efficient case (4/4), where hits in all layers of each multiplet are verified.

  • Non efficient case (3/4), where 3 out 4 hits are verified in each multiplet.

  • Non efficient case (2/4), where 2 out 4 hit are verified in each multiplet.

In the non efficient case 2 layers are taken (reference layers) to compute a straight line equation for a segment traversing the multiplet, which is used to compute the hit position (global coordinates) of the missing layers (probe layers).

Tagging: @gvasquez @carquin @pscholer @jojungge

Edited by Sebastian Julio Fuenzalida Garrido

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