July 2011 ntuple structure

- For each run, there are 2 ntuples: pedestal_runXXXX.root (containing pedestal data) and datafile_runXXXX.root (containting physics data)

- the latest ntuples can be found on pcdream.cern.ch in the folder: /mnt/wd/working_bak/ntuple/

- some example macro to read DRS data can be found here

- Channel mapping has changed during the test beam PLEASE REFER TO THE LOGBOOK FOR CHANNEL MAPPING a scan of the logbook is available on WebHome.

- Depending on the run setup, the ADCs cabling may change. A scheme of the readout is on WebHome.

Note for the analysers

There has been a big improvement with respect to the old ntuples: now channels are stored in the arrays in the correct order so that (for instance) CHARGEADCN0[6] always contains the charge of the 6th channel of ADC0 and you do not need to check CHADCN0[6]. The variable CHADCN0[] is still there so you old macro will keep working, but you can write your new macro without using it.

Ntuple structure scheme

type	name	Meaning	Comment
i	Nrunnumber	run number
i	TimeEvs	Time of event in Seconds
i	TimeEvu	Time of event in MicroSecond	(elapsed time = TimeEvs + TimeEvu)
i	Nevtda	Number of data event
i	CHSCA[16]	Channels in Scaler	CHSCA[i]=0 Spill Count
			CHSCA[i]=1 Physics Trigger Count
			CHSCA[i]=2 Pedestal Trigger Count
			CHSCA[i]=3 Event Count
			CHSCA[i]=4 Cleared Event Count
i	COUNTSCA[16]	Count in Scaler Channels
F	DATADRS[4][9][1024]	value of sample point DATADRS[group][channel][sample]	DRS data is corrected using the CAEN provided routins and corrections
F	INTDRS[4][9]	integral of the DRS signal INTDRS[group][channel]
F	PED_MEAN_DRS[4][9]	Pedestal Mean Value of the sampled points
F	PED_RMS_DRS[4][9]	RMS Mean Value of the sampled points
i	CHADCN0[32]	Channels in ADCN0 (32 Chs: 0 ..31)
i	CHARGEADCN0[32]	Charge in ADCN0 Channels(ADC counts)
b	OVERADCN0 [32]	Overflow bit in ADCN0
b	UNDERADCN0 [32]	Underflow bit in ADCN0
F	PED_MEAN_ADCN0[32]	Pedestal Mean Value in ADCN0 Channels(ADC counts)	PED_MEAN_ADCN0[0] Ped Mean Value for Ch0....PED_MEAN_ADCN0[31] Ped Mean Value for Ch31 Filled Field only for physics runs
F	PED_RMS_ADCN0[32]	Pedestal RMS Value in ADCN0 Channels	RMS_MEAN_ADCN0[0] Ped RMS Value for Ch0....RMS_MEAN_ADCN0[31] Ped RMS Value for Ch31 Filled Field only for physics runs
i	CHADCN1[32]	Channels in ADCN1 (V792AC module 1) (32 Chs: 0 ..31)
i	CHARGEADCN1[32]	Charge in ADCN1 Channels(ADC counts)
b	OVERADCN1 [32]	Over bit in ADCN1
b	UNDERADCN1 [32]	Under bit in ADCN1
F	PED_MEAN_ADCN1[32]	Pedestal MEAN Value in ADCN1 Channels(ADC counts)	PED_MEAN_ADCN1[0] Ped Mean Value for Ch0....PED_MEAN_ADCN1[31] Ped Mean Value for Ch31 Filled Field only for physics runs
F	PED_RMS_ADCN1[32]	Pedestal RMS Value in ADCN1 Channels(ADC counts)	PED_RMS_ADCN1[0] Ped RMS Value for Ch0....PED_RMS_ADCN1[31] Ped RMS Value for Ch31 Filled Field only for physics runs
i	CHADCN2[32]	Channels in ADCN2 (V792AC module 2) (32 Chs: 0 ..31) -
i	CHARGEADCN2[32]	Charge in ADCN2	Channels(ADC counts)
b	OVERADCN2 [32]	Over bit in ADCN2
b	UNDERADCN2 [32]	Under bit in ADCN2
F	PED_MEAN_ADCN2[32]	Pedestal MEAN Value in ADCN2 Channels(ADC counts)
F	PED_RMS_ADCN2[32]	Pedestal RMS Value in ADCN2 Channels(ADC counts)
i	CHADCN3[32]	Channels in ADCN3 (V792AC module 3) (32 Chs: 0 ..31) -
i	CHARGEADCN3[32]	Charge in ADCN3 Channels(ADC counts)
b	OVERADCN3 [32]	Over bit in ADCN3
b	UNDERADCN3 [32]	Under bit in ADCN3
F	PED_MEAN_ADCN3[32]	Pedestal MEAN Value in ADCN3 Channels(ADC counts)	PED_MEAN_ADCN3[0] Ped Mean Value for Ch0....PED_MEAN_ADCN3[31] Ped Mean Value for Ch31 Filled Field only for physics runs
F	PED_RMS_ADCN3[32]	Pedestal RMS Value in ADCN3 Channels(ADC counts)	PED_RMS_ADCN3[0] Ped RMS Value for Ch0....PED_RMS_ADCN3[31] Ped RMS Value for Ch31 Filled Field only for physics runs
i	CHTDC[64]	TDC Channel corresponding to the count (16 Channels : 0...15)	CHTDC[i]=0 UpStream DWC time Left CHTDC[i]=1UpStream DWC time Rigth CHTDC[i]=2UpStream DWC time Up CHTDC[i]=3UpStream DWC time Down
i	COUNTTDC[64]	Counts in TDC Channels
i	VALIDTDC[64]	0=good count 1=corrupt count
i	EDGETDC[64]	Edge in TDC (0=falling 1=rising)
i	N_X	Number of X Coordinates in DWC	Max value for N_X is 2 (there are two DWCs)
F	X[16]	X Coordinates in DWC (arbitrary units)
i	N_Y	Number of Y Coordinates in UpStream DWC	Max value for N_Y is 2 (there are two DWCs)
F	Y[16]	Y Coordinates in DWC (arbitrary units)

Types: I : a 32 bit signed integer (Int_t) i : a 32 bit unsigned integer (UInt_t) F : a 32 bit floating point (Float_t) B : a 8 bit signed integer (Char_t) s : a 16 bit unsigned integer (UShort_t) S : a 16 bit signed integer (Short_t) b : a 8 bit unsigned integer (UChar_t)