Weird distirbution in RUN15 day6669

- Weird 'splitting' like behavior in detId10, bottom, day 6669, QA0
- It only can be seen in day 6669
- It only can be seen in QA0 (Zgg < 0.7)

- I suspect this is backgrounds issue
- Plan to check day6669 run by run soon (per Akio's comment)

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 1. Comparison by QA items: day 6669, QA0 - QA6

  1-a. day 6669, QA0



  1-b. day 6669, QA1


  1-c. day 6669, QA2


  1-d. day 6669, QA3


  1-e. day 6669, QA4


  1-f. day 6669, QA5


  1-g. day 6669, QA6


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 2. Comparison by days: QA0, day 6669 - 9193

  2-a. day 6669, QA0



  2-b. day 6973, QA0



  2-c. day 7779, QA0



  2-d. day 8081, QA0



  2-e. day 8284, QA0



  2-f. day 8586, QA0



  2-g. day 8788, QA0



  2-h. day 8990, QA0



  2-i. day 9193, QA0