Fundamental Technologies

Voyager LECP Pages

Description of Browse and Browsef CSV Files

Introduction

BROWSE and BROWSEF CSV files are prepared from the SCN binary files. The SCN software builds records that include data from all of the sectors of an LECP scan. Data for which the motor position is unknown are placed in the “Sector 9” (also array index 9) position. Sector 10 contains the best estimate of the average values for a scan. The stepping motor takes the instrument through the sequence 1,2,3,4,5,6,7,8,8,7,6,5,4,3,2,1 (full scan) or 2,3,4,5,6,7,8,8,7,6,5,4,3,2 (limited scan), and in some circumstances, parked. When the LECP instrument was parked, the scan software writes out records at reasonable time intervals where only the index corresponding to the parked position contains data. The BROWSEF files are prepared from severely filtered FAT files. Noisy BROWSE data can be compared to BROWSEF data on a record by record basis to identify spurious numbers. BROWSE data may also be compared to STEP data for validation.

Naming Conventions for Browse and Browsef CSV Files

The syntax is:

VSYYDDDFBCC.CSV where:
S = 1 or 2 (identifying Voyager 1 or Voyager 2 data, respectively)
YY = two digit year number (77 through ??)
DDD = three digit day of year (for file start time)
“F” Denotes that the data are filtered (this character is not present for unfiltered data)
“B” Denotes ASCII Browse Listing
CC = Channel number from the table below.

Passbands and Geometrical Factors for Voyager 1 LECP Far Encounter and Cruise Channels
Passbands and Geometrical Factors for Voyager 2 LECP Far Encounter and Cruise Channels

Cruise and Near Encounter Combined (Standard Format)

FAT# NAME LOW
(MEV/N)		 HIGH (MEV/N) MEAN (MEV/N) G.F.
(CMSQSR)		   
1. Eβ01 0.015 0.0370 0.020 0.006   
2. Eβ'01 0.015 0.5000 0.020 0.00012   
3. Eβ02 0.037 0.0610 0.045 0.006   
4. Eβ'02 0.037 0.5000 0.045 0.00012   
5. Eβ03 0.070 0.112 0.090 0.006   
6. Eβ'03 0.070 0.5000 0.090 0.00012   
7. Eβ04 0.130 0.1830 0.120 0.006   
8. Eβ'04 0.130 0.5000 0.120 0.00012   
9. Eβ05 0.200 0.5000 0.200 0.006   
10. Eβ'05 0.200 0.5000 0.200 0.00012   
11. Eγ06 0.252 2.0000 0.250 0.00200   
12. Eγ07 0.480 2.0000 0.500 0.00200   
13. Eγ08 0.853 2.0000 0.900 0.00200   
14. Eγ09 2.100 5.0000 2.000 0.00200   
15. E44 0.3500 1.500 0.500 1.31   
16. E45 2.5000 100.0 2.000 1.31   
17. E37 6.0000 100.0 6.000 1.31   
18. PL01 0.030 0.0530 0.025 0.04020   
19. PL02 0.053 0.0850 0.050 0.04020   
20. PL03 0.085 0.1390 0.100 0.04020   
21. PL04 0.139 0.2000 0.150 0.04020   
22. PL05 0.2000 0.5500 0.2500 0.04020   
23. PL06 0.5400 1.0500 0.6 0.04020   
24. PL07 1.0500 2.0300 1.0000 0.04020   
25. PL08 2.0300 4.0100 2.5000 0.04020   
26. P32 0.3100 0.6100 0.3500 0.09750 E0E2(E3)
27. P1 0.5700 0.8900 0.6 0.44100 E1E2(E3)
28. P10 4.4000 9.2000 5.0000 0.53900 E2E3(E4)
29. P11 9.2000 21.000 12.000 0.53900 E2E3(E4)
30. P16 3.4000 17.600 5.0000 1.50000 E5E4(E3)
31. P23 22.000 31.000 25.000 1.31000 E5E4E3(E2)
32. P27 34.000 71.500 50.000 1.20000 E5E4E3E2
33. P31 211.00 1000.0 250.00 1.31000 E4E3
34. A39 0.1000 0.2030 0.1000 0.09750 E0(E2)
35. A33 0.2000 0.5100 0.3500 0.09750 E0E2(E3)
36. A46 0.1470 2.0000 0.6 0.44100 D1F1,CA
37. A3 0.4600 1.8000 0.6 0.44100 E1E2(E3)
38. A4 1.9000 4.0000 2.5000 0.44100 E1E2(E3L12
39. A12 4.2000 7.8000 5.0000 0.53900 E2E3(E4L23
40. A13 7.8000 21.000 15.000 0.53900 E2E3(E4L23
41. A17 3.3000 69.000 5.0000 1.50000 E5E4(E3L54
42. A24 22.000 31.000 25.000 1.31000 E5E4E3(E2
43. A28 33.000 62.000 50.000 1.20000  
44. AL01 0.9800 1.7700 1.0000 0.04020   
45. AL02 1.7700 4.2200 2.5000 0.04020   
46. M34 0.1500 0.1800 0.2000 0.09750 E0E2 CALC
47. L5 0.4700 5.6 1.5000 0.44100 E1E2(E3L12
48. L14 5.8000 28.000 6.0000 0.53900 E2E3(E4L23
49. L18 6.8000 28.000 5.0000 1.50000 E5E4(E3L54
50. M38 0.0720 0.1500 0.1000 0.09750 E0(E2)
51. M 0.1800 0.2800 0.2500 0.09750 E0 E2 (E3)
52. M46 0.1240 14.300 0.2500 0.44100 D1F2
53. M6 0.5300 5.6 0.5000 0.44100 E1E2(E3L12
54. M7 6.1700 8.6 6.0000 0.44100 E1E2(E3L12
55. M15 9.5000 46.000 15.000 0.53900 E2E3(E4L23
56. M19 6.8000 10.400 6.0000 1.50000 E5E4(E3L54
57. M20 10.400 40.000 15.000 1.50000 E5E4(E3L54
58. M25 48.000 64.000 50.000 1.31000 E5E4E3(E2)
59. M29 68.000 270.00 70.000 1.20000 E5E4E3 E2
60. H36 0.0990 0.1400 0.1000 0.09750 E0(E2)CAL
61. H8 0.3100 2.2000 0.3500 0.44100 E1E2(E3)
62. H9 2.3000 12.000 2.0000 0.44100 E1E2(E3)
63. H43 13.000 82.000 15.000 0.53900 E2E3(E4)
64. H21 9.5000 18.000 10.000 1.50000 E5E4(E3L54)
65. H22 19.000 78.000 25.000 1.50000 E5E4(E3L54)
66. H26 82.000 12.00 100.00 1.31000 E5 E4 E3
67. H30 127.00 850.00 150.00 1.20000 E5 E4 E3 E2
68. S AR        
69. S E0        
70. S E1        
71. S E2        
72. S E3        
73. S E4        
74. S E5        
75. S AL        
76. ALAR          
77. ESA0 2.5000 99.999 2.5000 0.49350 A 2-PI SR
78. ESB0 8.5000 99.999 8.5000 0.94620 B 4-PI SR
79. AB10 8.5000 99.999 8.5000 0.05040 A-B COINC.
80. DP09 0.2850 5.0200 0.2500 0.00084 DELTA'  
81. DP10 0.4800 2.5800 0.6 0.00084 DELTA'  
82. DP11 0.7250 1.6400 1.0000 0.00084 DELTA'  
83. PD09 0.2850 5.2500 0.2500 0.00260 DELTA  
84. PD10 0.4800 2.7200 0.6 0.00260 DELTA  
85. PD11 0.7250 1.5800 1.0000 0.00260 DELTA  
86. AB12 54.000 87.300 50.000 0.05040 A-B COINC.
87. AB13 87.300 152.00 100.00 0.05040 A-B COINC.
88. PSA1 15.800 158.00 15.000 0.49350 A 2-PI SR
89. PSA2 15.800 49.000 25.000 0.49350 A 2-PI SR
90. PSA3 16.300 26.200 25.000 0.49350 A 2-PI SR
91. PSB1 54.000 174.00 50.000 0.94620 B 4-PI SR
92. PSB2 54.000 87.300 50.000 0.94620 B 4-PI SR
93. PSB3 54.000 59.000 50.000 0.94620 B 4-PI SR
94. DA03 0.4800 2.4500 0.6 0.00084 DELTA'  
95. DA04 0.7800 1.4100 1.0000 0.00084 DELTA'  
96. DZ01 0.4050 18.800 0.6 0.00084 DELTA'  
97. AD03 0.4800 2.5800 0.6 0.00260 DELTA  
98. AD04 0.7800 1.4800 1.0000 0.00260 DELTA  
99. ZD01 0.4000 19.800 0.6 0.00260 DELTA  
00. SPARE            

Description of Voyager LECP CSV Files Type "B," or "Browse;" also "FB" or "Browsef"

Record #

Field #

 Contents
1

1

 Spacecraft ID VOYAGER:1:PRINTED (example)
 

2

 ON:
 

3

 Date& Binary Source 4-SEP-01:16:42:34:V177250S03 (example)
2

1

YY

 Labeling for Start Time of Data Interval
 

2

 DAY
 

3

 HH
 

4

 MM
 

5

 SS
 

6

YY

 Labeling for End Time of Data Interval
 

7

 DAY
 

8

 HH
 

9

 MM
 

10

 SS
 

11

 dd Label for Scan Direction of this Sector
 

12

 Label for Channel, Sector #1 Eβ01RATE
 

13

 Label for Channel, Sector #1 Uncertainty Eβ01UNC
 

14

 Label for Channel, Sector #2
 

15

 Label for Channel, Sector #2 Uncertainty
 

16

 Label for Channel, Sector #3
 

17

 Label for Channel, Sector #3 Uncertainty
 

18

 Label for Channel, Sector #4
 

19

 Label for Channel, Sector #4 Uncertainty
 

20

 Label for Channel, Sector #5
 

21

 Label for Channel, Sector #5 Uncertainty
 

22

 Label for Channel, Sector #6
 

23

 Label for Channel, Sector #6 Uncertainty
 

24

 Label for Channel, Sector #7
 

25

 Label for Channel, Sector #7 Uncertainty
 

26

 Label for Channel, Sector #8
 

27

 Label for Channel, Sector #8 Uncertainty
 

28

 Label for Channel, Sector #9
 

29

 Label for Channel, Sector #9 Uncertainty
 

30

 Label for Channel, Sector #10
 

31

 Label for Channel, Sector #10 Uncertainty
3

1

Data Start Time Year
 

2

 Data Start Time Day
 

3

 Data Start Time Hour
 

4

 Data Start Time Minute
 

5

 Data Start Time Second
 

6

 Data End Time Year
 

7

 Data End Time Day
 

8

 Data End Time Hour
 

9

 Data End Time Minute
 

10

Data End Time Second
 

11

 Direction +1 for increasing, -1 for decreasing, 0 if unknown
 

12

 Sector 1 Rate of Channel Eβ01RS01 (counts/second, -1 if not present)
 

13

 Uncertainty of Above (counts/second, -1 if not present)
 

14

 Sector 2 Rate of Channel Eβ01RS02 (counts/second, -1 if not present)
 

15

 Uncertainty of Above (counts/second, -1 if not present)
 

16

 Sector 3 Rate of Channel Eβ01RS03 (counts/second, -1 if not present)
 

17

 Uncertainty of Above (counts/second, -1 if not present)
 

18

 Sector 4 Rate of Channel Eβ01RS04 (counts/second, -1 if not present)
 

19

 Uncertainty of Above (counts/second, -1 if not present)
 

20

 Sector 5 Rate of Channel Eβ01RS05 (counts/second, -1 if not present)
 

21

 Uncertainty of Above (counts/second, -1 if not present)
 

22

 Sector 6 Rate of Channel Eβ01RS06 (counts/second, -1 if not present)
 

23

 Uncertainty of Above (counts/second, -1 if not present)
 

24

 Sector 7 Rate of Channel Eβ01RS07 (counts/second, -1 if not present)
 

25

 Uncertainty of Above (counts/second, -1 if not present)
 

26

 Sector 8 Rate of Channel Eβ01RS08 (counts/second, -1 if not present)
 

27

 Uncertainty of Above (counts/second, -1 if not present)
 

28

 Sector 9 Rate of Channel Eβ01RS09 (counts/second, -1 if not present)
 

29

 Uncertainty of Above (counts/second, -1 if not present)
 

30

 Sector 10 Rate of Channel Eβ01RS010 (counts/second, -1 if not present)
 

31

 Uncertainty of Above (counts/second, -1 if not present)

Return to Voyager LECP Data Analysis Handbook Table of Contents.
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Last modified 7/23/05, Tizby Hunt-Ward
tizby@ftecs.com