VOYAGER

Voyager LECP Data Analysis Handbook

 

Data File Descriptions

 

FAT Record Description

 

FAT TAPE DATA BLOCK

Effective 2/9/83:

 

Revised FAT Tape Definitions

 

Physical Record Length:	2800 Bytes
Logical Record Length:	2800 Bytes
No labels
Default Density:	1600 BPI, NRZI,PE
Data types:	I*2	DEC 2 Byte integers
	R*4	DEC 4 Byte reals
	A*2	ASCII 2 characters

 

List of Contents of R(100)

 

NUM	NAME	SPECIES	ENERGY (MEV/NUCLEON)	DETECTOR
1	EB01	ELECTRON	0.015 TO 0.037	BETA
2	EBD1	ELECTRON	0.015 TO 0.200	BETA PRIME
3	EB02	ELECTRON	0.037 TO 0.061	BETA
4	EBD2	ELECTRON	0.037 TO 0.200	BETA PRIME
5	EB03	ELECTRON	0.070 TO 0.112	BETA
6	EBD3	ELECTRON	0.070 TO 0.200	BETA PRIME
7	EB04	ELECTRON	0.130 TO 0.183	BETA
8	EBD4	ELECTRON	0.130 TO 0.200	BETA PRIME
9	EB05	ELECTRON	0.20 & UP	BETA
10	EBD5	ELECTRON	0.20 & UP	BETA PRIME
11	EG06	ELECTRON	0.20 & UP	GAMMA
12	EG07	ELECTRON	0.40 & UP	GAMMA
13	EG08	ELECTRON	0.70 & UP	GAMMA
14	EG09	ELECTRON	1.50 & UP	GAMMA
15	44	ELECTRON	0.35 TO 1.50	E4(E5A)(E3)(E2)
16	45	ELECTRON	2.5 & UP	E4 E3A (E3C)(E5A)(E2)
17	37	ELECTRON	6.0 & UP	E4 (E4A)E3C(E5A)(E2)
18	PL01	Z.GE.1	0.030 TO 0.053 (Z=1)	A1(A2)
19	PL02	Z.GE.1	0.053 TO 0.085 (Z=1)	A2(A3)
20	PL03	Z.GE.1	0.085 TO 0.139 (Z=1)	A3(A4)
21	PL04	Z.GE.1	0.139 TO 0.200 (Z=1)	A4(A5)
22	PL05	Z.GE.1	0.200 TO 0.550 (Z=1)	A5(A6)
23	PL06	Z.GE.1	0.540 TO 1.05 (Z=1)	A6(A7)
24	PL07	Z.GE.1	1.05 TO 2.03 (Z=1)	A7(A8)
25	PL08	Z.GE.1	2.03 TO 4.01 (Z=1)	A8(A9)
26	32	PROTONS	0.27 TO 0.70	E0 E2 (E3)
27	1	PROTONS	0.48 TO 1.40	E1 E2 (E3) (L12A)
28	10	PROTONS	4.10 TO 10.0	E2 E3 (E4)
29	11	PROTONS	10.0 TO 22.0	E2 E3 (E4)
30	16	PROTONS	3.0 TO 19.0	E5 E4 (E3)
31	23	PROTONS	19.0 TO 31.0	E5 E4 E3 (E2)
32	27	PROTONS	31.0 TO 150.0	E5 E4 E3 E2
33	31	PROTONS	240.& UP	E4 E3
34	39	ALPHAS	0.075 TO 0.150	E0 (E2)
35	33	ALPHAS	0.150 TO 0.430	E0 E2 (E3)
36	D1F1	ALPHAS	0.150 TO 1.10	E1
37	3	ALPHAS	0.39 TO 1.50	E1 E2 (E3) L12A (L12B)
38	4	ALPHAS	1.50 TO 3.70	E1 E2 (E3) L12A (L12B)
39	12	ALPHAS	4.20 TO 8.90	E2 E3 (E4) (L23A)
40	13	ALPHAS	8.90 TO 21.0	E2 E3 (E4) (L23A)
41	17	ALPHAS	3.0 TO 21.0	E5 E4 (E3) L54A (L54B)
42	24	ALPHAS	21.0 TO 31.0	E5 E4 E3 (E2)
43	28	ALPHAS	34.0 TO 64.0	E5 E4 E3 E2
44	AL01	ALPHAS	0.98 TO 1.77	A9(A10)
45	AL02	ALPHAS	1.77 TO 4.22	A10
46	34	ALPHAS	0.23 TO 0.44	E0 E2 (E3)
47	5	L-NUCLEI	0.60 TO 4.20	E1 E2 (E3) L12B (L12C)
48	14	L-NUCLEI	5.50 TO 33	E2 E3 (E4) L23A (L23B)
49	18	L-NUCLEI	4.0 TO 21	E5 E4 (E3) L54B (L54C)
50	38	M-NUCLEI	0.047 TO 0.125	E0 (E2)
51	35	M-NUCLEI	0.125 TO 0.260	E0 E2 (E3)
52	D1F2	M-NUCLEI	0.130 TO 10.	E1
53	6	M-NUCLEI	0.440 TO 2.90	E1 E2 (E3)
54	7	M-NUCLEI	2.90 TO 7.8	E1 E2 (E3)
55	15	M-NUCLEI	7.80 TO 40.	E2 E3 (E4) L23B (L23C)
56	19	M-NUCLEI	6.30 TO 10.0	E5 E4 (E3) L54C (L54D)
57	20	M-NUCLEI	10.0 TO 42.0	E5 E4 (E3) L54C (L54D)
58	25	M-NUCLEI	42.0 TO 64.0	E5 E4 E3 (E2)
59	29	M-NUCLEI	64.0 TO 200.	E5 E4 E3 E2
60	36	H-NUCLEI	0.062 TO 0.105	E0 E2 (E3)
61	8	H-NUCLEI	0.250 TO 2.00	E1 E2 (E3)
62	9	H-NUCLEI	2.00 TO 13.	E1 E2 (E3)
63	43	H-NUCLEI	13.0 TO 74.0	E2 E3 (E4) L23C
64	21	H-NUCLEI	8.60 TO 21.0	E5 E4 (E3) L54D
65	22	H-NUCLEI	21.0 TO 86.0	E5 E4 (E3) L54D
66	26	H-NUCLEI	86.0 TO 125.	E5 E4 E3 (E2)
67	30	H-NUCLEI	125.0 & UP	E5 E4 E3 E2
68	42	MISC.	AR
69	42	MISC.	E0
70	42	MISC.	E1
71	42	MISC.	E2
72	42	MISC.	E3
73	42	MISC.	E4
74	42	MISC.	E5
75	42	MISC.	AL
76	41	MISC.	AL AR
C	NEAR	ENCOUNTER	ONLY DATA CHANNELS
77	ESA0	ELECTRONS	2.5 & UP	A SINGLES
78	ESB0	ELECTRONS	8.5 & UP	B SINGLES
79	AB10	ELECTRONS	8.5 & UP	A1 B0 COINC.
80	DP09	IONS	0.285 TO 5.02	DELTA '
81	DP10	IONS	0.480 TO 2.58	DELTA '
82	DP11	IONS	0.725 TO 1.64	DELTA '
83	PD09	IONS	0.285 TO 5.25	DELTA
84	PD10	IONS	0.480 TO 2.72	DELTA
85	PD11	IONS	0.725 TO 1.72	DELTA
86	AB12	IONS	54.0 TO 87.3	A1 B2 COINC.
87	AB13	IONS	87.3 TO 152.	A1 B3 COINC.
88	PSA1	IONS	15.8 TO 158.	A1 SINGLES
89	PSA2	IONS	15.8 TO 49.0	A2 SINGLES
90	PSA3	IONS	16.3 TO 26.2	A3 SINGLES
91	PSB1	IONS	54.0 TO 174.	B1 SINGLES
92	PSB2	IONS	54.0 TO 87.3	B2 SINGLES
93	PSB3	IONS	54.0 TO 59.0	B3 SINGLES
94	DA03	IONS Z.GE.2 0	0.480 TO 2.45	DELTA '
95	DA04	IONS Z.GE.2 0	0.780 TO 1.41	DELTA '
96	DZ01	IONS Z.GE.2 0	0.405 TO 18.8	DELTA '
97	AD03	IONS Z.GE.2 0	0.480 TO 2.58	DELTA
98	AD04	IONS Z.GE.2 0	0.780 TO 1.48	DELTA
99	ZD01	IONS Z.GE.2 0	0.400 TO 19.8	DELTA
100	SPARE
101-200	UNC.	1-100	UNITS OF 64*PERCENT
201-300	NUMBER	1-100	UNITS OF BASIC ACCUM. TIME FOR MODE

 

The array IFILL(700) reserves space for items calculated from the RATES(100) array using empirically derived expressions and coefficients that are loaded into labeled common blocks which are the beginning of execution from the subroutine NEWBEG.FOR. In FORTRAN programs these items may be conveniently organized using the arrays IGAM(50), ICOMPR(30), IANGER(20), IUGAM(50), IUCOMP(50), IUANGR(20), IGFLX(100, ICFACT(100), FLUXES(100), IUFLUX(100) and ISTP(100,2). Note that ISTP(100,2) is prepared in the subroutine MTRCHECK_2001 and carries the information necessary to establish which a given channel might have directionally mixed data due to insufficiently rapid sampling compared to motor stepping.

 

COMMON/FOUT/IHED(100),RATES(100),IUNCS(100),NSAMP(100),IGAM(50),
          1           ICOMPR(30),IANGER(20),IUGAM(50),IUCOMP(30),IUANGR(20),
          2           IGFLX(100),ICFACT(100),FLUXES(100),IUFLUX(100),ISTP(100,2)

 

List of Contents of IGAM(50)

 

OFFSET	INDEX	ITEM	DESCRIPTION	UNITS
301	1	EB01/EB02	EXPONENT IN A POWER LAW FIT (Eγ)	2048*γ
302	2	EB02/EB03	EXPONENT IN A POWER LAW FIT (Eγ)	2048*γ
303	3	EB03/EB04	EXPONENT IN A POWER LAW FIT (Eγ)	2048*γ
304	4	EB04/EB05	EXPONENT IN A POWER LAW FIT (Eγ)	2048*γ
305	5	EG06/EG07	EXPONENT IN A POWER LAW FIT (Eγ)	2048*γ
306	6	EG07/EG08	EXPONENT IN A POWER LAW FIT (Eγ)	2048*γ
307	7	EG08/EG09	EXPONENT IN A POWER LAW FIT (Eγ)	2048*γ
308	8	PL01/PL02	EXPONENT IN A POWER LAW FIT (Eγ)	2048*γ
309	9	PL02/PL03	EXPONENT IN A POWER LAW FIT (Eγ)	2048*γ
310	10	PL03/PL04	EXPONENT IN A POWER LAW FIT (Eγ)	2048*γ
311	11	PL04/PL05	EXPONENT IN A POWER LAW FIT (Eγ)	2048*γ
312	12	PL05/PL06	EXPONENT IN A POWER LAW FIT (Eγ)	2048*γ
313	13	PL06/PL07	EXPONENT IN A POWER LAW FIT (Eγ)	2048*γ
314	14	PL07/PL08	EXPONENT IN A POWER LAW FIT (Eγ)	2048*γ
315	15	32/1	EXPONENT IN A POWER LAW FIT (Eγ)	2048*γ
316	16	1/10	EXPONENT IN A POWER LAW FIT (Eγ)	2048*γ
317	17	10/11	EXPONENT IN A POWER LAW FIT (Eγ)	2048*γ
318	18	16/23	EXPONENT IN A POWER LAW FIT (Eγ)	2048*γ
319	19	AL01/AL02	EXPONENT IN A POWER LAW FIT (Eγ)	2048*γ
320	20	39/33	EXPONENT IN A POWER LAW FIT (Eγ)	2048*γ
321	21	33/3	EXPONENT IN A POWER LAW FIT (Eγ)	2048*γ
322	22	3/4	EXPONENT IN A POWER LAW FIT (Eγ)	2048*γ
323	23	4/12	EXPONENT IN A POWER LAW FIT (Eγ)	2048*γ
324	24	12/13	EXPONENT IN A POWER LAW FIT (Eγ)	2048*γ
325	25	17/24	EXPONENT IN A POWER LAW FIT (Eγ)	2048*γ
326	26	38/35	EXPONENT IN A POWER LAW FIT (Eγ)	2048*γ
327	27	35/6	EXPONENT IN A POWER LAW FIT (Eγ)	2048*γ
328	28	6/7	EXPONENT IN A POWER LAW FIT (Eγ)	2048*γ
329	29	7/15	EXPONENT IN A POWER LAW FIT (Eγ)	2048*γ
330	30	19/20	EXPONENT IN A POWER LAW FIT (Eγ)	2048*γ
331	31	36/8	EXPONENT IN A POWER LAW FIT (Eγ)	2048*γ
332	32	8/9	EXPONENT IN A POWER LAW FIT (Eγ)	2048*γ
333	33	9/43	EXPONENT IN A POWER LAW FIT (Eγ)	2048*γ
334	34	21/22	EXPONENT IN A POWER LAW FIT (Eγ)	2048*γ
335	35	Pδ09/Pδ10	LOG10 RATIO	2048*γ
336	36	Pδ10/Pδ11	LOG10 RATIO	2048*γ
337	37	PAB12/13	LOG10 RATIO	2048*γ
338	38	Pδ'09/Pδ'10	LOG10 RATIO	2048*γ
339	39	Pδ'10/Pδ'11	LOG10 RATIO	2048*γ
340	40	Aδ03/Aδ04	LOG10 RATIO	2048*γ
341	41	Aδ'03/Aδ'04	LOG10 RATIO	2048*γ
342	42	SA2/SB2	LOG10 RATIO	2048*γ
343-350	SPARES

 

List of Contents of ICOMPR(30)

 

OFFSET	INDEX	ITEM	DESCRIPTION	UNITS
351	1	PL03/39	P/ALPHA RATIO .075 TO .150	64*Ratio (Dimensionless)
352	2	(PL04+PL05)/33	P/APLHA RATIO .150 TO .430	64*Ratio (Dimensionless)
353	3	(PL06+PL07)/3	P/ALPHA RATIO .390 TO 1.5	64*Ratio (Dimensionless)
354	4	1/3	P/ALPHA RATIO .48 TO 1.5	64*Ratio (Dimensionless)
355	5	10/12	P/ALPHA RATIO 4.2 TO 8.9	64*Ratio (Dimensionless)
356	6	11/13	P/ALPHA RATIO 8.9 TO 21.0	64*Ratio (Dimensionless)
357	7	PL07/AL01	P/ALPHA RATIO 1.0 TO 1.8	64*Ratio (Dimensionless)
358	8	PL08/ 4	P/ALPHA RATIO 1.5 TO 3.7	64*Ratio (Dimensionless)
359	9	16/17	P/ALPHA RATIO 3.0 TO 21.0	64*Ratio (Dimensionless)
360	10	23/24	P/ALPHA RATIO 21.0 TO 31.0	64*Ratio (Dimensionless)
361	11	27/28	P/ALPHA RATIO 31.0 TO 64.0	64*Ratio (Dimensionless)
362	12	39/38	ALPHA/MEDIUM 0.047 TO 0.125	64*Ratio (Dimensionless)
363	13	33/35	ALPHA/MEDIUM 0.125 TO 0.260	64*Ratio (Dimensionless)
364	14	(3+4)/6	ALPHA/MEDIUM 0.440 TO 2.90	64*Ratio (Dimensionless)
365	15	12/7	ALPHA/MEDIUM 2.90 TO 7.80	64*Ratio (Dimensionless)
366	16	13/15	ALPHA/MEDIUM 7.80 TO 40.0	64*Ratio (Dimensionless)
367	17	17/19	ALPHA/MEDIUM 6.30 TO 10.0	64*Ratio (Dimensionless)
368	18	(24+28)/(20+25)	ALPHA/MEDIUM 10.0 TO 64.0	64*Ratio (Dimensionless)
369	19	D1F1/D1F2	ALPHA/MEDIUM 0.130 TO 10.0	64*Ratio (Dimensionless)
370	20	38/36	MEDIUM/HEAVY 0.062 TO 0.105	64*Ratio (Dimensionless)
371	21	6/8	MEDIUM/HEAVY 0.250 TO 2.00	64*Ratio (Dimensionless)
372	22	7/9	MEDIUM/HEAVY 2.00 TO 13.0	64*Ratio (Dimensionless)
373	23	15/43	MEDIUM/HEAVY 13.0 TO 74.0	64*Ratio (Dimensionless)
374	24	(19+20+25)/(21+22)	MEDIUM/HEAVY 8.60 TO 86.0	64*Ratio (Dimensionless)
375	25	Pδ09/Aδ03	PROTON/ALPHA,RAW C.R. RATIO	64*Ratio (Dimensionless)
376	26	Pδ10/Aδ04	PROTON/ALPHA,RAW C.R. RATIO	64*Ratio (Dimensionless)
377	27	Aδ04/Zδ01	ALPHA/MEDIUM,RAW C.R. RATIO	64*Ratio (Dimensionless)
378	28	Pδ'09/Aδ'03	PROTON/ALPHA,RAW C.R. RATIO	64*Ratio (Dimensionless)
379	29	Pδ'10/Aδ'04	PROTON/ALPHA,RAW C.R. RATIO	64*Ratio (Dimensionless)
380	30	Aδ'04/Zδ'01	ALPHA/MEDIUM,RAW C.R. RATIO	64*Ratio (Dimensionless)

 

List of Contents of IANGR(20)

 

OFFSET	INDEX	ITEM	DESCRIPTION	UNITS
381	1	(10+11)/16	FRONT/BACK RATIO PROTONS 3.0 TO 19.0	512*Ratio (Dimensionless)
382	2	(12+13)/17	FRONT/BACK RATIO ALPHAS 3.0 TO 21.0	512*Ratio (Dimensionless)
383	3	15/(19+20)	FRONT/BACK RATIO MEDIUMS 6.3 TO 42.0	512*Ratio (Dimensionless)
384	4	43/(21+22)	FRONT/BACK RATIO HEAVIES 8.6 TO 86.0	512*Ratio (Dimensionless)
385	5	Eβ1/Eβ'1	POLAR/EQUATOR ELECTRONS	512*Ratio (Dimensionless)
386	6	Eβ2/Eβ'2	POLAR/EQUATOR ELECTRONS	512*Ratio (Dimensionless)
387	7	Eβ3/Eβ'3	POLAR/EQUATOR ELECTRONS	512*Ratio (Dimensionless)
388	8	Eβ4/Eβ'4	POLAR/EQUATOR ELECTRONS	512*Ratio (Dimensionless)
389	9	Eβ5/Eβ'5	POLAR/EQUATOR ELECTRONS	512*Ratio (Dimensionless)
390	10	Pδ09/Pδ'09	EQUATOR/POLAR IONS	512*Ratio (Dimensionless)
391	11	Pδ10/Pδ'10	EQUATOR/POLAR IONS	512*Ratio (Dimensionless)
392	12	Pδ11/Pδ'11	EQUATOR/POLAR IONS	512*Ratio (Dimensionless)
393	13	Aδ03/Aδ03	EQUATOR/POLAR ALPHAS	512*Ratio (Dimensionless)
394	14	Aδ04/Aδ'04	EQUATOR/POLAR ALPHAS	512*Ratio (Dimensionless)
395	15	Zδ01/Aδ'01	EQUATOR/POLAR MEDIUMS	512*Ratio (Dimensionless)
396-400	SPARES

 

Uncertainty Arrays for IGAM(50),ICOMPR(30),IANGR(20)

 

Offset	Index	Item	Description	Units
401-500	1-100		UNCS.FOR ITEMS 301-400 ABOVE	64* percent (-6400 means no datum)

 

Description of IGFLX(100)

 

Offset	Index	Description	Units
501-600	IGFLX(1) thru IGFLX(100)	**THIS IS A VECTOR OF LENGTH 100 CONTAINING THE VALUES OF GAMMA USED IN CORRECTING THE COUNT RATES FOR THE FINITE PASSBAND WIDTHS IN THE DERIVATION OF THE DIFFERENTIAL FLUXES. THESE MAY BE ACTUAL OR DEFAULT VALUES, DEPENDING ON THE OUTCOME OF THE ATTEMPT TO DERIVE AN ESTIMATE FROM THE COUNT RATE RATIOS.	2048*γ

 

Description of ICFACT(100)

 

Offset	Index	Description	Units
601-700	ICFACT(1) thru ICFACT(100)	COMPOSITION CORRECTION FACTORS FOR RATE CHANNELS 1-100. THESE ARE THE NUMERICAL FACTORS BY WHICH THE COUNT RATE WAS MULTIPLIED TO CORRECT IT FOR CONTAMINATION BY EXTRA SPECIES. THIS IS A NUMBER BETWEEN 0. AND 1.0.	1024*Factor

 

Explanation of FLUX(100)

 

Offset	Index	Description	Units
701-800	FLUX(1) thru FLUX(100)	FLUXES CORRESPONDING TO ITEMS 1-100 ABOVE. DIFFERENTIAL FLUXES EVALUATED AT STANDARD VALUES OF THE ENERGY AND CORRECTED FOR FINITE PASSBAND WIDTHS AND CONTAMINATION BY UNDESIRED SPECIES.	Particles (cm2sec sr MeV)

 

Explanation of IUFLUX(100)

 

Offset	Index	Statistical Uncertainties in Fluxes	Units
801-900	IUFLUX(1) thru  IUFLUX(100)	FLUX UNCS. IN UNITS OF 64*PERCENT. BY EXPRESSING THE UNCERTAINTY IN UNITS OF 64*PERCENT WE CAN USE AN INTEGER VARIABLE HERE. THIS HAS TWO ADVANTAGES: ONE, IT SAVES SPACE IN THE RECORD, AND TWO, REAL NUMBERS HAVE TO BE CONVERTED INTO MACHINE-DEPENDENT FORM OF INTERNAL BINARY WORD.	64* percent

 

Explanation of ISTP(100,1)

 

Offset	Index	Description
901-1000	ISTP(1,1)	100 I*2 WORDS WHICH GIVE THE NUMBER OF MOTOR POSITIONS INCLUDED IN THE AVERAGE--USUALLY =1 FOR UNMIXED DATA.

 

Explanation of ISTP(100,2)

 

Offset	Index	Description
1001-1100	ISTP(1,2)	100 I*2 WORDS WHICH GIVE THE STARTING POSITION OF THIS AVERAGE. IHED(15) GIVES THE ENDING POSITION OF THE MOTOR.

 

 

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VOYAGER 1 ELAPSED TIME

Days: Hours: Minutes: Seconds

*Since official launch
September 5, 1977, 12:56:00:00 UTC

VOYAGER 2 ELAPSED TIME

Days: Hours: Minutes: Seconds

*Since official launch
August 20, 1977, 14:29:00:00 UTC

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