/[PAMELA software]/tracker/ground/doc/LEVEL2-R3.txt
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Annotation of /tracker/ground/doc/LEVEL2-R3.txt

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Revision 1.1 - (hide annotations) (download)
Wed Mar 8 15:00:36 2006 UTC (18 years, 9 months ago) by pam-fi
Branch point for: MAIN, trk-ground
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Initial revision

1 pam-fi 1.1 ===========
2     LEVEL2 data
3     *
4     (R-3.00)
5     ===========
6    
7     LEVEL2 nt-uple structure:
8    
9     ******************************************************************
10     * Ntuple ID = 22 Entries = 2390 LEVEL2
11     ******************************************************************
12     * Var numb * Type * Packing * Range * Block * Name *
13     ******************************************************************
14     * 1 * L*4 * 1 * * GENERAL * GOOD2
15     * 2 * I*4 * * * GENERAL * NEV2
16     * 3 * I*4 * * * GENERAL * WHIC_CALIB
17     * 4 * I*4 * * * GENERAL * SWCODE
18     * 5 * L*4 * 1 * * GENERAL * CRC(12)
19     * 1 * U*4 * 6 * [0,50] * CPU * PKT_TYPE
20     * 2 * I*4 * * * CPU * PKT_NUM
21     * 3 * I*4 * * * CPU * OBT
22     * 4 * L*4 * 1 * * CPU * CPU_CRC
23     * 1 * I*4 * * [0,50] * TRACKS * NTRK
24     * 2 * U*4 * 6 * [0,50] * TRACKS * IMAGE(NTRK)
25     * 3 * R*4 * * * TRACKS * XM(6,NTRK)
26     * 4 * R*4 * * * TRACKS * YM(6,NTRK)
27     * 5 * R*4 * * * TRACKS * ZM(6,NTRK)
28     * 6 * R*4 * * * TRACKS * RESX(6,NTRK)
29     * 7 * R*4 * * * TRACKS * RESY(6,NTRK)
30     * 8 * R*4 * * * TRACKS * AL(5,NTRK)
31     * 9 * R*4 * * * TRACKS * COVAL(5,5,NTRK)
32     * 10 * R*4 * * * TRACKS * CHI2(NTRK)
33     * 11 * U*4 * 1 * [0,1] * TRACKS * XGOOD(6,NTRK)
34     * 12 * U*4 * 1 * [0,1] * TRACKS * YGOOD(6,NTRK)
35     * 13 * R*4 * * * TRACKS * XV(6,NTRK)
36     * 14 * R*4 * * * TRACKS * YV(6,NTRK)
37     * 15 * R*4 * * * TRACKS * ZV(6,NTRK)
38     * 16 * R*4 * * * TRACKS * AXV(6,NTRK)
39     * 17 * R*4 * * * TRACKS * AYV(6,NTRK)
40     * 18 * R*4 * * * TRACKS * DEDX_X(6,NTRK)
41     * 19 * R*4 * * * TRACKS * DEDX_Y(6,NTRK)
42     * 20 * R*4 * * * TRACKS * BdL(NTRK)
43     * 1 * I*4 * * [0,500] * SINGLETX * NCLSX
44     * 2 * I*4 * * * SINGLETX * PLANEX(NCLSX)
45     * 3 * R*4 * * * SINGLETX * XS(2,NCLSX)
46     * 4 * R*4 * * * SINGLETX * SGNLXS(NCLSX)
47     * 1 * I*4 * * [0,500] * SINGLETY * NCLSY
48     * 2 * I*4 * * * SINGLETY * PLANEY(NCLSY)
49     * 3 * R*4 * * * SINGLETY * YS(2,NCLSY)
50     * 4 * R*4 * * * SINGLETY * SGNLYS(NCLSY)
51     ******************************************************************
52     * Block * Entries * Unpacked * Packed * Packing Factor *
53     ******************************************************************
54     * GENERAL * 2390 * 64 * 14 * 4.571 *
55     * CPU * 2390 * 16 * 9 * 1.778 *
56     * TRACKS * 2390 * 23404 * Var. * Variable *
57     * SINGLETX * 2390 * 8004 * Var. * Variable *
58     * SINGLETY * 2390 * 8004 * Var. * Variable *
59     * Total * --- * 39492 * Var. * Variable *
60     ******************************************************************
61     * Blocks = 5 Variables = 37 Max. Columns = 9873 *
62     ******************************************************************
63    
64     The GENERAL block stores the global event flag GOOD2, the event counter NEV2,
65     a variable that relates each event to the calibration parameters (WHICH_CALIB)
66     the version number of the software (SWCODE) and the result of the crc check for
67     the 12 views of th etracking system (CRC(12)).
68     If WHICH_CALIB=0 (missing calibration) then GOOD2=.FALSE.
69    
70     The CPU block stores the event tag extracted from the physics-packet
71     CPU-header (PKT_TYPE, PKT_NUM, OBT, CPU_CRC) .
72    
73     The TRACKS block stores track information:
74     NTRK - number of identified tracks (in case the Y ambiguity is not
75     solved both the track images are stored)
76     IMAGE(NTRK) - ID of the track image (=0 if no image)
77     XM(6,NTRK) - measured coordinates associated to the track
78     YM(6,NTRK) '
79     ZM(6,NTRK) '
80     RESX(6,NTRK) - spatial resolution associated to each coordinate
81     RESY(6,NTRK) '
82     AL(5,NTRK) - TRACK PARAMETERS: X0,Y0,sin(THETA0),PHI0,DEFLECTION
83     COVAL(5,5,NTRK)- Variance/covariance matrix of parameters
84     CHI2(NTRK) - reduced chi^2 of the track
85     XGOOD(6,NTRK) - flag indicating if a plane was included in the track fitting
86     YGOOD(6,NTRK) '
87     XV(6,NTRK) - calculated coordinates
88     YV(6,NTRK) '
89     ZV(6,NTRK) '
90     AXV(6,NTRK) - calculated angles
91     AYV(6,NTRK) '
92     DEDX_X(6,NTRK) - energy release in MIP, scaled to 300 microns, for x clusters
93     DEDX_Y(6,NTRK) - energy release in MIP, scaled to 300 microns, for y clusters
94     BdL(NTRK) - integral, along the track, of BxdL (T*m))
95    
96     The SINGLETS block stores information about those clusters not associated with
97     any track:
98     NCLSX - number of singlets on the x views
99     PLANEX(NCLSX) - plane which the i-th x-singlet belong to
100     XS(2,NCLSX) - coordinate (on sensors 1 and 2)
101     SGNLXS(NCLSX) - signal in MIP (not scaled)
102     NCLSY - number of singlets on the y views
103     PLANEY(NCLSY) - plane which the i-th y-singlet belong to
104     YS(2,NCLSY) - coordinate (on sensors 1 and 2)
105     SGNLYS(NCLSY) - signal in MIP (not scaled)
106    

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