Analyze of LAZIO work, files 170405.000 and 170405.001 .
1. LAZIO worked about 8327 sec. (I received it from Mauro onboard timer and time register).
2. 425 initializations were occurred with code 0x0007 (TDR FALURE)
3. 425 silicon calibration packets with code 0x4444 are in file.
4. Initialization and calibration take about 7 sec (all time about 7*425=2975 sec)
The example of packets in hexadecimal system are shown in fig.1.
Figure 1.
The result of conversion from binary to ASCI codes is presented below.
LAZIO flight 170405.000
initialization - 1111
OK calibration - 4444
packet
time
time
time_ packet S1S2S3 S1T1S2 S2T2S3 Time
S1S2S3 S1S2S3* S1S2
counter
seconds
useconds spent size
Mauro
2 1113732608. 0.4250 0.0006
70
0
0
0
6.62
1
1
2
3 1113732608. 0.4516 0.0008
122
0
0
0
6.65
2
2
3
4 1113732608. 0.4902 0.0012
480
1
0
0
6.68
3
3
4
5 1113732608. 0.6046 0.0008
208
2
0
3
6.80
4
4
5
6 1113732608. 0.6694 0.0010
216
3
0
5
6.86
5
5
6
7 1113732608. 0.7877 0.0006
66
4
0
9
6.98
6
6
7
8 1113732608. 0.8083 0.0011
176
5
1
14
7.00
7
7
8
**************************************************************************************************
438 1113732608. 0.3059 0.0007
144
384
216
570
21.50
388
388
434
439 1113732608. 0.3283 0.0008
128
385
216
571
21.53
389
389
435
440 1113732608. 0.3461 1.8495
30
386
217
574
21.54
390
390
436
initialization - 1111
TDR Failure
-0007
OK calibration - 4444
443 1113732608. 0.0828 0.0008
204
386
217
576
28.43
392
2
438
444 1113732608. 0.1251 0.0007
124
387
218
577
28.47
393
3
439
445 1113732608. 0.1486 0.0007
124
388
219
577
28.50
394
4
440
**************************************************************************************************
455 1113732608. 0.5422 0.0009
288
397
224
595
28.89
403
13
450
456 1113732608. 0.5592 0.0008
70
398
224
595
28.91
404
14
451
457 1113732608. 0.5850 1.8596
30
399
225
598
28.93
405
15
452
initialization - 1111
TDR Failure
-0007
OK calibration - 4444
460 1113732608. 0.3591 0.0006
106
399
226
603
35.85
407
2
454
461 1113732608. 0.3850 0.0007
114
400
226
605
35.88
408
3
455
462 1113732608. 0.4173 0.0007
138
401
226
605
35.91
409
4
456
**************************************************************************************************
1849 1113732608. 0.0430 0.0016
94
1637
941
2162
99.99
1656
802
1827
1850 1113732608. 0.0496 0.0009
246
1638
941
2162
100.00
1657
803
1828
1851 1113732608. 0.0747 1.8512
30
1639
941
2162
100.03
1658
804
1829
initialization - 1111
TDR Failure
-0007
OK calibration - 4444
1854 1113732608. 0.7255 0.0009
260
1639
941
2162
106.83
1660
2
1831
1855 1113732608. 0.7733 0.0007
124
1640
941
2162
106.87
1661
3
1832
1856 1113732608. 0.8025 0.0009
294
1641
942
2163
106.90
1662
4
1833
**************************************************************************************************
2437 1113732736. 0.6054 0.0008
88
2147
1629
2717
125.71
2172
514
2408
2438 1113732736. 0.6935 0.0009
138
2148
1629
2723
125.80
2173
515
2409
2439 1113732736. 0.7038 1.8821
30
2149
1630
2724
125.81
2174
516
2410
initialization - 1111
TDR Failure
-0007
OK calibration - 4444
2442 1113732736. 0.4342 0.0009
150
2149
1630
2728
132.66
2176
2
2412
2443 1113732736. 0.4891 0.0011
146
2150
1630
2729
132.71
2177
3
2413
2444 1113732736. 0.5483 0.0012
148
2151
1631
2730
132.77
2178
4
2414
**************************************************************************************************
2613 1113732736. 0.8917 0.0007
102
2305
1714
2890
138.12
2332
158
2582
2614 1113732736. 0.9054 0.0007
172
2306
1714
2890
138.13
2333
159
2583
2615 1113732736. 0.9351 1.8933
30
2307
1714
2891
138.16
2334
160
2584
initialization - 1111
TDR Failure
-0007
OK calibration - 4444
2618 1113732736. 0.6608 0.0007
112
2308
1715
2891
144.99
2335
1
2586
2619 1113732736. 0.6698 0.0006
108
2308
1715
2892
145.00
2336
2
2587
2620 1113732736. 0.6829 0.0007
138
2309
1715
2892
145.02
2337
3
2588
**************************************************************************************************
2652 1113732736. 0.0073 0.0007
80
2339
1722
2940
146.34
2367
33
2620
2653 1113732736. 0.0234 0.0007
158
2340
1722
2941
146.36
2368
34
2621
2654 1113732736. 0.0630 1.8707
30
2341
1723
2944
146.40
2369
35
2622
initialization - 1111
TDR Failure
-0007
OK calibration - 4444
2657 1113732736. 0.8104 0.0007
118
2341
1724
2945
153.27
2371
2
2624
2658 1113732736. 0.8698 0.0008
206
2342
1724
2946
153.33
2372
3
2625
2659 1113732736. 0.8729 0.0008
120
2342
1724
2946
153.34
2372
3
2626
The structure of last “EVENT PACKET”(0x8888) before “INITIALIZATION” is disturbed - the nul information from TDR (codes 0x2201,
0x2202, 0x2204 and 0x2208 are absent), The length of packet is too short(30 bytes). Latency time of information from TDR is about 2 sec - it is the
reason of initialization. The correlation between count rates of 1111 packets and trigger packets is shown in fig. 2.
Count rate of aaaa1111 in Hz
CORRELATION BETWEEN TRIGGERS AND aaa111 packets
0,25
0,2
a1111
Linear (a1111)
0,15
0,1
y = 0,0048x + 0,0001
R2 = 0,8185
0,05
0
0
5
10
15
20
25
30
35
40
45
Count rate of triggers in Hz
Figure 2.
Analyze of tile work
1. The signals S1*S2 (main trigger of LAZIO) and S1*T1*S2 was used for tile work analyze. It gives the best fit for this purpose.
S1 - signal from first scintillation detector,
S2 - signal from second scintillation detector
T1 – signal from tile plane, which consist of 8 tiles.
T1 plane arranges between S1 and S2 detectors. The sum area of tiles is less then S1 and S2 detector areas. The signal S1*S2 was used as trigger
for front-end electronics of silicon strip detectors. The areas of scintillation and silicon detectors are coinciding.
The count rates of S1*S2 and S1*T1*S2 signals as function of time are presented on fig. 3.
Count ra te s of trigge r syste m signa ls vs time
40
35
30
S1T1S2
S1S2
Count rate in Hz
25
20
15
10
5
0
0
1000
2000
3000
4000
5000
Figure 3
6000
7000
8000
9000
Time in sec
The behavior of tow signals corresponds to usual situation in space. Maximal count rates correspond to polar part of space orbit, minimal – to equator
part. The different values of signals are explained with different arises of S1, S2 and T1 detectors. The correlation between S1S2 and S1T1S2 signals is
shown on fig.4.
Count rate of S1*T1*S2 vs count rate of S1*S2
Count rate of S1*T1*S2
25
20
15
10
y = 0,4943x - 0,0616
R2 = 0,9827
5
0
5
10
15
20
25
30
35
40
Count rate of triggers in Hz
Figure 4
The behavior of S2*T2*S3 signal is the same as trigger signal, but the geometrical factor of S2*T2*S3 is significantly greater then S1*S2.
The count rates of all trigger system signals presented on fig. 5.
Count rate in Hz
Count rate s of trigge r s ys te m s ignals vs tim e
100
Packet 8888
90
S1S2S3
S1T1S2
80
S2T2S3
70
MS1S2S3
S1S2
60
50
40
30
20
10
0
0
2000
4000
6000
8000
Time in sec
Figure 5
Count rate of single tile signals as function of time presented on fig.6. The count rates of tiles are in accordance with trigger count rate. The difference
in values of tile count rates can be explained with large noises and different efficiencies of each tile.
The preliminary conclusion – tiles are worked well in space, It is necessary to produce silicon information developing to estimate efficiency of each
tile.
Count rate of single tile signals vs time
40
Trigg.
T28
35
T11
T13
30
T14
Count rate in Hz
T15
T16
25
T17
T18
20
T21
T22
15
T23
T24
10
T25
T26
5
T27
T28
0
0
1000
2000
3000
4000
5000
6000
7000
8000
9000
Time in sec.