The plots are done with fast offline MuDsts converted to PicoDsts (with eTOF information) from day 098 or 104 (AuAu at 14.6 GeV) to complement an earlier study by Philipp on the intrinsic detector efficiency using the same data: drupal.star.bnl.gov/STAR/event/2019/04/18/star-endcap-tofcbm-tof-meeting/efficiency-studies

event selection:
V_r < 1.5 cm
V_z < 70cm

track selection:
primary track
pt > 0.15 GeV
nHitsFit > 15
nHitsFit/nHitsPoss > 0.52

eTOF volumes are made 1cm bigger in localXY to account for the uncertainly in the track extrapolation

The efficiency plots (match_intersection_ratio & match_unique_intersection_ratio) show the ratio of the number of tracks matched to an eTOF hit with deltaX and deltaY smaller than 5cm over the number of tracks that have an intersection with the eTOF MRPC volume (using ideal helix extrapolation).
If a track has several intersections, only the first one (at smallest path length) is taken in the 'unique' version of the plot.

Similarly the efficiency plot shows the number of primary tracks with matched eTOF hit to the number of primary tracks intersecting eTOF as a function of momentum for each MRPC counter.
Note that drops in efficiency for some counters might be due to periods in time in which the counter was taken out of the run (we are looking at integrated values over all runs in one day).
Looking at the 1d projections combining the 9 counters in a sector the eTOF matching efficiency reaches ~45% at high momentum.

The deltaX, deltaY plot are shown for sector 14 module 1 counter 1. In some other counters the distribution is slightly less peaked... probably a hit position calibration issue.

The 1/beta vs. momentum plots show the data of all counters for day 098 (pid2019) and for one counter from the test FXT run 20113047 (bands for pions, kaons, protons and deuterons visible).

For the phase space coverage plots protons were identified by a cut on 0.6 < m^2 < 1.2 using either bTOF or eTOF
(and a cleanup cut on dEdx to reject some residual pions: dEdx > ( -4 * mom + 6.8 ) )
The red lines indicate eta=-1.0 and eta=-1.7.