Fundamental Technologies

Voyager LECP Pages

STEP and STEPF Files

Definitions and Naming Convention

The files are prepared from the FAT (STEP) and filtered FAT (STEPF) binary files.  The FAT files are step-synchronous averages of the LECP data.  All data samples that occur within a specific motor position are averaged.  If no data are read out in a given motor position, the datum will be absent.  This file has one record for each motor position.  If the LECP instrument is parked, then records are generated every 24 seconds with the motor position unchanging.  Filtered FAT files are generated by comparing the rates derived from the MRT files with a “reasonable” maximum rate.  Data that exceed the expected maximum are omitted from the averages.

First Line Sample: VOYAGER1,PRINTED,10-AUG-01,15:18:12,V177250A76.lst

(START)YYYY DD HH MM SEC (STOP) YYY DD HH MM SEC SECTOR N*(Item, Unc.)
where N* repeats the item and its uncertainty. The files are created in two systems of units, rates and fluxes. The naming conventions for these files are:

SSYYDDD(G,F)SGG.LST or SSYYDDDSGG.CSV where:

SS = V1 or V2
YY = two digit year number (77 through Present)
DDD = three digit day of year (for file start time)
(G,F) is an optional character which is present in the STEPF files to indicate that filtering has been applied
“S” = Stands for ASCII Listing of “Step” Files
GG = Group number from table below.

Grp. #

Col. 1

Col.2

Col. 3

Col.3

Col. 5

Col. 6

Descriptions

1

18

19

20

21

22

  

PL01,2,3,4,5 Rates

2

23

24

25

44

45

  

PL06,7,8,AL01,2 Rates

3

1

3

5

7

9

  

EB01,2,3,4,5 Rates

4

2

4

6

8

10

  

EB'01,2,3,4,5 Rates

5

11

12

13

14

    

EG06,7,8,9 Rates

6

34

50

36

52

    

E0 (E1) , D1F1, D1F2 Rates

7

26

35

46

51

60

  

E0 E2 (E3) Rates

8

27

28

29

53

54

  

Protons, Mediums Rates

9

37

38

47

61

62

  

Alphas, L Nuclei, H Nuclei Rates

10

39

40

48

55

63

  

Alphas, L Nuclei, H Nuclei Rates

11

15

16

17

33

    

E44, E45, E37, P31 Rates

12

30

31

42

58

66

  

E5 E4 (E3) Rates

13

32

43

59

67

    

E5 E4 E3 E2 Rates

14

41

49

56

57

64

65

E5 E4 (E3) Rates

15

68

75

76

74

73

  

Singles Rates

16

69

70

71

72

    

Singles Rates

17

83

84

85

97

98

99

Pd09,10,11, A d03,04,Z d01 Rates

18

80

81

82

94

95

96

Pd’09,10,11, A d’03,04,Z d’01 Rates

19

77

88

89

90

    

ESA0, PSA1, PSA2, PSA3 Rates

20

78

91

92

93

    

ESB0, PSB1, PSB2, PSB3 Rates

21

79

86

87

      

AB10, AB12, AB13 Rates

22

18

19

20

21

22

  

PL01,2,3,4,5 Fluxes

23

23

24

25

44

45

  

PL06,7,8,AL01,2 Fluxes

24

1

3

5

7

9

  

EB01,2,3,4,5 Fluxes

25

2

4

6

8

10

  

EB'01,2,3,4,5 Fluxes

26

11

12

13

14

    

EG06,7,8,9 Fluxes

27

34

50

36

52

    

E0 (E1) , D1F1, D1F2 Fluxes

28

26

35

46

51

60

  

E0 E2 (E3) Fluxes

29

27

28

29

53

54

  

Protons, Mediums Fluxes

30

37

38

47

61

62

  

Alphas, L Nuclei, H Nuclei Fluxes

31

39

40

48

55

63

  

Alphas, L Nuclei, H Nuclei Fluxes

32

15

16

17

33

    

E44, E45, E37, P31 Fluxes

33

30

31

42

58

66

  

E5 E4 (E3) Fluxes

34

32

43

59

67

    

E5 E4 E3 E2 Fluxes

35

41

49

56

57

64

65

E5 E4 (E3) Fluxes

36

83

84

85

97

98

99

Pd09,10,11, A d03,04,Z d01 Fluxes

37

80

81

82

94

95

96

Pd’09,10,11, A d’03,04,Z d’01 Fluxes

38

77

88

89

90

    

ESA0, PSA1, PSA2, PSA3 Fluxes

39

78

91

92

93

    

ESB0, PSB1, PSB2, PSB3 Fluxes

40

79

86

87

      

AB10, AB12, AB13 Fluxes

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

Near Encounter STEP Files

 INDEX

FAT #

NAME

LOW
(MeV/N)

HIGH
(MeV/N)

MEAN
(MeV/N)

G.F. (cm2sr)

1

1.

EB01

0.015

0.0370

0.020

0.006

2

2.

EBD1

0.015

0.5000

0.020

0.00012

3

3.

EB02

0.037

0.0610

0.045

0.006

4

4.

EBD2

0.037

0.5000

0.045

0.00012

5

5.

EB03

0.070

0.112

0.090

0.006

6

6.

EBD3

0.070

0.5000

0.090

0.00012

7

7.

EB04

0.130

0.1830

0.120

0.006

8

8.

EBD4

0.130

0.5000

0.120

0.00012

9

9.

EB05

0.200

0.5000

0.200

0.006

10

10.

EBD5

0.200

0.5000

0.200

0.00012

11

11.

EG06

0.252

2.0000

0.250

0.00200

12

12.

EG07

0.480

2.0000

0.500

0.00200

13

13.

EG08

0.853

2.0000

0.900

0.00200

14

14.

EG09

2.100

5.0000

2.000

0.00200

15

 

 

 

 

 

 

16

 

 

 

 

 

 

17

 

 

 

 

 

 

18

18.

PL01

0.030

0.0530

0.025

0.04020

19

19.

PL02

0.053

0.0850

0.050

0.04020

20

20.

PL03

0.085

0.1390

0.100

0.04020

21

21.

PL04

0.139

0.2000

0.150

0.04020

22

22.

PL05

0.2000

0.5500

0.2500

0.04020

23

23.

PL06

0.5400

1.0500

0.6

0.04020

24

24.

PL07

1.0500

2.0300

1.0000

0.04020

25

25.

PL08

2.0300

4.0100

2.5000

0.04020

26

44.

AL01

0.9800

1.7700

1.0000

0.04020

27

45.

AL02

1.7700

4.2200

2.5000

0.04020

28

77.

ESA0

2.5000

99.999

2.5000

0.49350

29

78.

ESB0

8.5000

99.999

8.5000

0.94620

30

79.

AB10

8.5000

99.999

8.5000

0.05040

31

80.

DP09

0.2850

5.0200

0.2500

0.00084

32

81.

DP10

0.4800

2.5800

0.6

0.00084

33

82.

DP11

0.7250

1.6400

1.0000

0.00084

34

83.

PD09

0.2850

5.2500

0.2500

0.00260

35

84.

PD10

0.4800

2.7200

0.6

0.00260

36

85.

PD11

0.7250

1.5800

1.0000

0.00260

37

86.

AB12

54.000

87.300

50.000

0.05040

38

87.

AB13

87.300

152.00

100.00

0.05040

39

88.

PSA1

15.800

158.00

15.000

0.49350

40

89.

PSA2

15.800

49.000

25.000

0.49350

41

90.

PSA3

16.300

26.200

25.000

0.49350

42