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=========== |
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LEVEL2 data |
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* |
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(R-2.00) |
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=========== |
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|
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LEVEL2 nt-uple structure: |
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|
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****************************************************************** |
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* Ntuple ID = 22 Entries = 5680 LEVEL2 |
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****************************************************************** |
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* Var numb * Type * Packing * Range * Block * Name * |
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****************************************************************** |
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* 1 * L*4 * 1 * * EVENT * GOOD2 |
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* 2 * I*4 * * * EVENT * NEV2 |
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* 1 * U*4 * 6 * [0,50] * CPU * PKT_TYPE |
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* 2 * I*4 * * * CPU * PKT_NUM |
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* 3 * I*4 * * * CPU * OBT |
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* 4 * U*4 * 6 * [0,50] * CPU * WHICH_CALIB |
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* 1 * I*4 * * [0,50] * TRACKS * NTRK |
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* 2 * U*4 * 6 * [0,50] * TRACKS * IMAGE(NTRK) |
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* 3 * R*4 * * * TRACKS * XM(6,NTRK) |
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* 4 * R*4 * * * TRACKS * YM(6,NTRK) |
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* 5 * R*4 * * * TRACKS * ZM(6,NTRK) |
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* 6 * R*4 * * * TRACKS * RESX(6,NTRK) |
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* 7 * R*4 * * * TRACKS * RESY(6,NTRK) |
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* 8 * R*4 * * * TRACKS * AL(5,NTRK) |
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* 9 * R*4 * * * TRACKS * COVAL(5,5,NTRK) |
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* 10 * R*4 * * * TRACKS * CHI2(NTRK) |
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* 11 * U*4 * 1 * [0,1] * TRACKS * XGOOD(6,NTRK) |
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* 12 * U*4 * 1 * [0,1] * TRACKS * YGOOD(6,NTRK) |
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* 13 * R*4 * * * TRACKS * XV(6,NTRK) |
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* 14 * R*4 * * * TRACKS * YV(6,NTRK) |
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* 15 * R*4 * * * TRACKS * ZV(6,NTRK) |
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* 16 * R*4 * * * TRACKS * AXV(6,NTRK) |
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* 17 * R*4 * * * TRACKS * AYV(6,NTRK) |
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* 18 * R*4 * * * TRACKS * DEDXP(6,NTRK) |
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* 1 * I*4 * * * SINGLETS * NCLSX(6) |
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* 2 * I*4 * * * SINGLETS * NCLSY(6) |
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****************************************************************** |
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* Block * Entries * Unpacked * Packed * Packing Factor * |
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****************************************************************** |
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* EVENT * 5680 * 8 * 5 * 1.600 * |
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* CPU * 5680 * 16 * 10 * 1.600 * |
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* TRACKS * 5680 * 22004 * Var. * Variable * |
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* SINGLETS * 5680 * 48 * 48 * 1.000 * |
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* Total * --- * 22076 * Var. * Variable * |
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****************************************************************** |
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* Blocks = 4 Variables = 26 Max. Columns = 5519 * |
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****************************************************************** |
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The EVENT block stores the global event flag GOOD2 and the event counter NEV2. |
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|
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The CPU block stores the event tag extracted from the physics-packet |
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CPU-header (PKT_TYPE, PKT_NUM, OBT) and a variable that relates each event to |
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the calibration parameters (WHICH_CALIB). |
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(If WHICH_CALIB=0 (missing calibration) then GOOD2=.FALSE.) |
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|
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The TRACKS block stores track information: |
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NTRK - number of identified tracks (in case the Y ambiguity is not |
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solved both the track images are stored) |
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IMAGE(NTRK) - ID of the track image (=0 if no image) |
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XM(6,NTRK) - measured coordinates associated to the track |
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YM(6,NTRK) ' |
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ZM(6,NTRK) ' |
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RESX(6,NTRK) - spatial resolution associated to each coordinate |
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RESY(6,NTRK) ' |
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AL(5,NTRK) - TRACK PARAMETERS: X0,Y0,sin(THETA0),PHI0,DEFLECTION |
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COVAL(5,5,NTRK)- Variance/covariance matrix of parameters |
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CHI2(NTRK) - reduced chi^2 of the track |
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XGOOD(6,NTRK) - flag indicating if a plane was included in the track fitting |
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YGOOD(6,NTRK) ' |
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XV(6,NTRK) - calculated coordinates |
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YV(6,NTRK) ' |
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ZV(6,NTRK) ' |
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AXV(6,NTRK) - calculated angles |
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AYV(6,NTRK) ' |
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DEDXP(6,NTRK) - average energy release |
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The SINGLETS block stores information about those clusters not associated with |
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any track: |
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NCLSX(6) - number of singlets in each plane |
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NCLSY(6) ' |
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