Pedestal shift study¶

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#4023-#4032: 20210120, no beam, HV on, pulse trigger
#4066: 20210124, no beam, HV off, pulse trigger

Name:_SC_D,_SC_A,_SC_B,_X,_LASPD_t,_LASPD_b,_SC_C,_PreSh_L(SDU#1),_PreSh_R(THU#1),_PreSh_T(SDU#2),_Shower_L(SDU#4),_Shower_R(THU#2),_Shower_T(SDU#5),__CerA,__CerB,__CerC, CerD
HV:1150,_1550,_1650,_0,____800,_____900,_1600,___________1470,___________1740,___________1680,____________1030,_____________1030,____________900,___930,___930,___930, ___930

Do the HV scan following this table (note that CerD is connected to HV channel E08C2_ch07):
For Cherenkov: ch13,ch14,ch15, E08C2_ch07: 910, 930, 950, 970
For Shower: ch10,ch11: 900, 950, 1000, 1050
For Shower: ch12: 800, 850, 900, 950

run\channel 10 11 12 13 14 15 07
4023, 4024: HV : 800, 900, 900, 910, 910, 910, 910
4025, 4026: 950, 950, 850, 930, 930, 930, 930
4027, 4028: 1000,1000, 900, 950, 950, 950, 950
4029, 4030: 1050,1050, 950, 970, 970, 970, 970
4031, 4032: 1030,1030, 900, 950, 950, 950, 950
4066 0, 0, 0, 0, 0, 0, 0

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20210120
run# ch7.00 ch7.01 ch7.02 ch7.03 ch7.04 ch7.05 ch7.06 ch7.07 ch7.08 ch7.09 ch7.10 ch7.11 ch7.12 ch7.13 ch7.14 ch7.15 ch8.00 ch8.01 ch8.02 ch8.03 ch8.04 ch8.05 ch8.06 ch8.07 ch8.08 ch8.09 ch8.10 ch8.11 ch8.12 ch8.13 ch8.14 ch8.15
4023 106.7 103.6 99.1 101.4 101.3 98.5 103.4 94.9 108.9 102.6 107.2 110.4 105.0 101.6 103.5 99.3 115.3 110.3 123.0 115.8 104.9 104.7 108.4 107.0 107.0 102.1 104.4 100.6 104.9 107.4 113.2 103.1
4024 106.8 103.7 99.2 101.4 101.2 98.5 103.6 95.0 108.9 102.7 107.2 110.6 105.2 101.6 103.5 99.5 115.2 110.5 122.9 115.5 105.0 105.0 108.6 107.2 107.0 102.1 104.3 100.7 105.1 107.6 113.2 103.1
4025 106.6 103.6 99.3 101.5 101.3 98.6 103.5 94.8 109.0 102.6 107.4 110.5 105.3 101.6 103.6 99.5 115.0 110.6 122.9 117.2 105.1 105.0 108.4 107.0 107.0 102.1 104.4 100.7 104.9 107.4 113.3 103.2
4026 106.6 103.6 99.2 101.5 101.3 98.6 103.4 95.0 109.0 102.6 107.3 110.4 105.2 101.5 103.5 99.5 115.1 110.4 122.9 117.4 105.1 104.8 108.4 107.0 106.9 102.1 104.4 100.7 104.9 107.5 113.4 103.1
4027 106.5 103.4 99.1 101.3 101.2 98.5 103.3 94.9 108.8 102.5 107.3 110.6 105.3 101.5 103.5 99.5 115.2 110.4 122.9 117.3 105.0 104.7 108.5 106.9 106.9 102.0 104.3 100.5 105.2 107.4 113.4 103.1
4028 106.5 103.5 99.3 101.5 101.2 98.5 103.4 94.9 108.8 102.4 107.3 110.5 105.3 101.5 103.4 99.4 115.1 110.4 122.8 117.4 105.0 105.0 108.4 106.9 106.9 102.0 104.4 100.8 105.1 107.4 113.3 103.2
4029 106.5 103.7 99.1 101.5 101.3 98.5 103.5 95.0 108.9 102.4 107.4 110.5 105.3 101.7 103.5 99.6 115.2 110.5 122.8 117.3 105.0 105.0 108.5 106.9 106.9 102.1 104.4 100.7 105.0 107.4 113.2 103.0
4030 106.5 103.7 99.2 101.6 101.2 98.5 103.5 95.0 108.9 102.5 107.3 110.7 105.2 101.6 103.4 99.6 115.0 110.5 122.6 117.5 105.1 105.0 108.5 106.9 107.0 102.0 104.3 100.7 104.9 107.4 113.2 103.3
4031 106.8 103.9 99.4 101.7 101.1 98.6 103.9 94.9 109.2 102.6 107.4 110.3 105.4 101.7 103.4 99.4 115.4 110.6 122.7 118.5 105.1 105.0 108.5 107.2 106.9 102.1 104.3 100.8 105.0 107.5 113.4 103.2
4032 106.7 104.0 99.3 101.7 101.3 98.7 103.8 95.1 109.3 102.7 107.5 110.6 105.4 101.8 103.5 99.4 115.1 110.7 122.8 118.7 105.1 105.0 108.5 107.2 107.0 102.1 104.4 100.7 104.9 107.7 113.3 103.3

20210124
run# ch7.00 ch7.01 ch7.02 ch7.03 ch7.04 ch7.05 ch7.06 ch7.07 ch7.08 ch7.09 ch7.10 ch7.11 ch7.12 ch7.13 ch7.14 ch7.15 ch8.00 ch8.01 ch8.02 ch8.03 ch8.04 ch8.05 ch8.06 ch8.07 ch8.08 ch8.09 ch8.10 ch8.11 ch8.12 ch8.13 ch8.14 ch8.15
4066 106.4 103.8 99.8 101.6 101.7 98.6 103.6 95.8 109.5 103.3 107.6 110.5 105.4 102.0 103.9 99.5 117.3 109.4 123.3 124.4 104.9 105.0 108.8 107.0 107.3 101.6 104.8 101.2 105.4 108.0 115.1 103.2

Summary:
Within a short time (several days), pedestals are stable and do not show dependence on HVs.
The largest change in pedestal happended to CerSum (ch8.03), which is 8.9 adc unit between HV off and HV on.
However, this change is still within 3 sigma.
The 2nd large change in pedestal happened to SC_D (ch8.00), which is 2.3 adc unit between HV off and HV on.