Data Set Summary ================ Data Set ID: ULY-J-COSPIN-LET-3-RDR-FLUX-32SEC-V1.0 Instrument: COSPIN Low Energy Telescope (LET) Instrument P.I.: R. Bruce McKibben (COSPIN), K.-P. Wenzel (LET) Data Supplier: Trevor R. Sanderson Data sampling rate: 32 seconds Data Set Start time: 1992-01-25T00:00:02.000Z Data Set Stop time: 1992-02-16T23:57:57.000Z Naming convention ----------------- Data files in this data set are named according to the convention: Tyyddd.TAB where yy = the last two digits of the year ('92' for 1992) ddd = the day of the year covered by the file Record format ------------- These files can be read according to the FORTRAN format statement: '(a24,38(1x,1pe9.2))' where 'a24' is the time stamp in PDS format: yyyy-mm-ddThh:mm:ss.sssZ. The individual elements of the time field can be read according to the statement: '(i4,4(1x,i2),1x,f6.3,1x)' year, month, day, hour, minute, seconds. thus a record may be alternatively be read according to the format: '(i4,4(1x,i2),1x,f6.3,1x,38(1x,1pe9.2))' Data column descriptions ------------------------ time a24 Spacecraft Event Time in format yyyy-mm-ddThh:mm:ss.sssZ L1 1pe9.2 protons (0.9-1.2 MeV) L2 1pe9.2 protons (1.2-3.0 MeV) L3 1pe9.2 protons (1.8-3.8 MeV) L4 1pe9.2 protons (1.8-3.8 MeV) sector 1 L5 1pe9.2 protons (1.8-3.8 MeV) sector 2 L6 1pe9.2 protons (1.8-3.8 MeV) sector 3 L7 1pe9.2 protons (1.8-3.8 MeV) sector 4 L8 1pe9.2 protons (1.8-3.8 MeV) sector 5 L9 1pe9.2 protons (1.8-3.8 MeV) sector 6 L10 1pe9.2 protons (1.8-3.8 MeV) sector 7 L11 1pe9.2 protons (1.8-3.8 MeV) sector 8 L12 1pe9.2 protons (3.8-8.0 MeV) L13 1pe9.2 protons (3.8-8.0 MeV) sector 1 L14 1pe9.2 protons (3.8-8.0 MeV) sector 2 L15 1pe9.2 protons (3.8-8.0 MeV) sector 3 L16 1pe9.2 protons (3.8-8.0 MeV) sector 4 L17 1pe9.2 protons (3.8-8.0 MeV) sector 5 L18 1pe9.2 protons (3.8-8.0 MeV) sector 6 L19 1pe9.2 protons (3.8-8.0 MeV) sector 7 L20 1pe9.2 protons (3.8-8.0 MeV) sector 8 L21 1pe9.2 protons (8.0-19.0 MeV) L22 1pe9.2 alphas (1.0-5.0 MeV) L23 1pe9.2 alphas (1.9-3.7 MeV) L24 1pe9.2 alphas (3.7-8.4 MeV) L25 1pe9.2 alphas (8.4-19.0 MeV) L26 1pe9.2 Li,Be,B (1.9-4.9 MeV) L27 1pe9.2 Li,Be,B (4.9-26 MeV) L28 1pe9.2 C,N,O (2.6-7.1 MeV) L29 1pe9.2 C,N,O (7.1-39.0 MeV) L30 1pe9.2 Z>=10 (3.0-9.0 MeV) L31 1pe9.2 10<=Z<=20 (9.0-50 MeV) L32 1pe9.2 Z>=20 (12.0-75.0 MeV) L33 1pe9.2 electrons (0.3-1.0 MeV) L34 1pe9.2 single detector counting rate 1 L35 1pe9.2 single detector counting rate 2 L36 1pe9.2 single detector counting rate 3 L37 1pe9.2 single detector counting rate 4 L38 1pe9.2 single detector counting rate 5 Missing data flag value ----------------------- Any data column whose value is -9.99e+10 is a missing data value. Data Description ================ COSPIN-LET RECORD FORMAT (REFERENCE: [SIMPSONETAL1992A] page 382, table 4) UDS REPRESENTATIVE: T.R. SANDERSON (ESTCS1::TSANDERS) RECORD FORMAT: IMPLICIT REAL(L) DIMENSION L4_11(8),L13_20(8),L34_38(5) C FIXED FORMAT READ(1,100)IYR,IMON,IDAY,IHR,IMIN,SEC, . L1,L2,L3,L4_11,L12,L13_20,L21, . L22,L23,L24,L25, . L26,L27,L28,L29,L30,L31,L32,L33,L34_38 100 FORMAT(I4,4(1X,I2),1X,F6.3,1X,38(1X,1PE9.2)) PARAMETER LIST: TIME: spacecraft event time in the format yyyy-mm-ddThh:mm:ss.sssZ L1: protons (0.9-1.2 MeV) L2: " (1.2-3.0 MeV) L3: " (1.8-3.8 MeV) L4_11: " " sectors 1 to 8 L12: " (3.8-8.0 MeV) L13_20: " " sectors 1 to 8 L21: " (8.0-19.0 MeV) L22: alphas (1.0-5.0 MeV) L23: " (1.9-3.7 MeV) L24: " (3.7-8.4 MeV) L25: " (8.4-19.0 MeV) L26 Li,Be,B (1.9-4.9 MeV) L27 " (4.9-26 MeV) L28 C,N,O (2.6-7.1 MeV) L29 " (7.1-39.0 MeV) L30 Z>=10 (3.0-9.0 MeV) L31 10<=Z<=20 (9.0-50 MeV) L32 Z>=20 (12.0-75.0 MeV) L33 electrons (0.3-1.0 MeV) L34_38 single detector counting rates FLUX UNITS: (/cm^2/s/sr/MeV) TIME RESOLUTION: 32 seconds NOTES: The response of the LET rate channels is affected by at least three different effects originating in the electronic circuits: dead-time effect; pulse pile-up; and baseline shift.