EPAC Contact:
M. Bruns
Max-Planck-Institut f�r Aeronomie
Max-Planck-Strasse 2
D-37191 Katlenburg-Lindau
Germany
Phone:
Telefax: (44) 171 594-7772
E-mail: bruns@linmpi.mpg.de
ULYSSES-KEP/EPAC data files
===========================
The file names for ULYSSES-KEP/EPAC Experiment data files are:
ULYKEP-YYYY-TT.dat
Where YYYY: Year, and TT: Data Category Type
These are ASCII files, records seperated with LF (x0A) and
fields with Blank (x20).
Each record contains the following fields:
- UTC (%24c)
e.g. 2000-01-01T00:44:48.000Z
- SCET (%10d)
e.g. 1577839488
- Identification (%12c)
e.g. HST1S3H1A0C1 or BRT2..H0A1C0 or ER....H1A1C0
dots are used as filler characters for not applicable fields
- Type (%6c) e.g.
- Data Category (%2c)
ER BR EL PR OP PS ZS HR HS EV
- Telescope (%2c)
T1, T2, T3, T4
- Species (%2c)
S1, S2, S3, S4
- Flags (%6c)
- Mode Selection (%2c)
H0, H1 (Ion Mode, Heavy Ion Mode)
- Discriminator A1 Status (%2c)
A0, A1 (Low Threshold, High Threshold)
- Discriminator C Status (%2c)
C0, C1 (Low Threshold, High Threshold)
- AcquisitionTime (%11.5E)
(not for Data Category: EV)
- DataValues (%12.5E) single precision float
The error value indicator is -1.0, that value should not be used.
- ER (HMOD)
Event-Rate Low, Medium and High Omnidirectional Channels.
ER are the rate channels ERL, ERM, ERH. They are summed over all
4 telescopes and mark portions of the dE/dx matrix. ERL includes
protons and He basically, ERM has mainly C, N, O and ERH all
elements above. All three channels are summed over all PHA
energy channels in the specific portion of the matrix.
Units: Flux / (s cm^2 ster)
Values: erl erm erh
- BR
Background-Rate, 3 Channels
Telescope: 1, 2, 3, 4
Units: Flux / (s)
Values: bra brb brc
- EL
Electrons, 2 Channels
Telescope: 1, 2, 3, 4
Electrons Low (100-380 keV) Spin Averages
Electrons High (E > 180 keV) Spin Averages
Units: Flux / (s)
Values: ell elh
- PR (DA1)
Proton-Rate, 8 Channels
Telescope: 2, 3
Channels ~500-1000 keV
Units: Flux / (s KeV cm^2 ster)
Values: pr[ch] (ch=0; ch<8; ch++)
- OP (DA1)
Omnidirectional-Protons, Spin Averages
Telescope: 1, 2, 3, 4
Energy 520-1423 keV
Units: Flux / (s KeV cm^2 ster)
Values: op
- PS (DA1)
Proton Spectral, 8 Channels, 8 Sectors
Telescope: 1, 2, 3, 4
Units: Flux / (s KeV cm^2 ster)
Values: ps[se][ch] ((se=0; se<8; se++) (ch=0; ch<8; ch++))
- ZS (DA1, HMOD)
??? Spectral, 8 Channels, 8 Sectors
Telescope: 1, 2, 3, 4
ZS stands for Z>=1 ion spectral channels, very similar to the
PS channels but total ion channels only where thresholds can be
set to exclude certain species.
Units: Flux / (s cm^2 ster)
Values: zs[se][ch] ((se=0; se<8; se++) (ch=0; ch<8; ch++))
- HR (HMOD)
?? Rates, summed over 8 Energy Channels and 8 Sectors
Telescope: 1,2,3,4
Species: 1,2,3,4
This category is a sum of all 8 HS channels for each of the 4
selected species: HRS1 is the same as the sum of all 8 channels
of HSS1 but with a different time resolution.
Units: Flux / (s cm^2 ster)
Values: hr
- HS (HMOD)
?? Spectral, 8 Energy Channels, 4 Sectors for Telescope 2 and 3)
Telescope: 1,2,3,4
Species: 1,2,3,4
EPAC has 4 species x 8 energy channels (HST1S1-HST4S4) which are
selectable. EPAC can run in heavy ion mode (H1) or in ion mode
(H0). Basically what we do is to put boxes around the tracks for
different species. For example the first 4 channels of the selected
species 1 (HST1S1H1) contain 4 channels of He. Another example
would be that EPAC had 8 sulfur (species 3) channels during the
Jupiter flyby (HST1S3H1). We also changed the settings several
times during flight. You will get a list for all HS channels over
time including species and energy of them.
Units: Flux / (s cm^2 ster)
Values: hs[se][ch] ((se=0; se"S"<1-4> (i=0; i<32; i++)
Hint: These values are integers
The error value or no data indicator: -1 -1 T0S0
[ EPAC Index ]