sc = science, l2p = Level-2 pre, l2 = Level-2, l = L-mode, mass = Mass accumulation mode, cnt = Count accumulation mode, np = number of spin phase bins, nm = number of mass bins
The Level-2 pre data products (Level-2 pre CDF data files) are generated for each combination of spin phase bins and mass bins (np x nm) in the Mass accumulation mode. As a result, 20 data products/CDF files are provided for this mode.
PP-nmMM_yyyymmdd_rXX-vYY-ZZ.cdfPP = 01, 02, 04, 08, 16MM = 01, 02, 04, 08yyyymmdd = (year) + (month) + (day)XX, YY, ZZ = release, major, monior numbers| Variable | Description | Data type | Data type in IDL | Dimension | Unit | Time resolution | Remarks |
|---|---|---|---|---|---|---|---|
| epoch | Time labels in the CDF_TT2000 format | CDF_TIME_TT2000 | LONG64 | [time] | ns | ~4 * (num_add_interval_Spin in the observation mode flag) [s] | |
| strtime | Time labels in UTC string | CDF_CHAR | STRING | [time] | UTC | “YYYY-MM-DDThh:mm:ss.ffffffZ” | |
| time_width | Data accumulation period in second | CDF_REAL4 | FLOAT | [time] | s | ||
| mdp_ti | Time indicators (TIs) given by Mission Data Processor (MDP) | CDF_UNIT4 | ULONG | [time] | NA | ||
| c_cnt_tot | Total coincident count | CDF_REAL4 | FLOAT | [time x spin phase x energy] | counts/sample | ||
| sta_cnt_tot | Total start sector raw count | CDF_REAL4 | FLOAT | [time x spin phase x energy] | counts/sample | ||
| sto_cnt_tot | Total stop sector raw count | CDF_REAL4 | FLOAT | [time x spin phase x energy] | counts/sample | ||
| InvalidTOF_CNT | Invalid TOF count | CDF_REAL4 | FLOAT | [time x spin phase x energy] | counts/sample | ||
| c_sta_cnt | Coincident start sector count | CDF_REAL4 | FLOAT | [time x spin phase x energy x start sector] | counts/sample | ||
| c_sto_cnt | Coincident stop sector count | CDF_REAL4 | FLOAT | [time x spin phase x energy x stop sector] | counts/sample | ||
| c_cnt | Coincident count | CDF_REAL4 | FLOAT | [time x spin phase x energy x start sector x mass bin] | counts/sample | ||
| uncorrected_flux | Uncorrected differential number flux | CDF_REAL4 | FLOAT | [time x spin phase x energy x start sector x mass bin] | counts/s/cm2/eV/sr | This variable would be filled with the fill value/NaN in a later calibration phase. | |
| corrected_flux | Corrected differential number flux | CDF_REAL4 | FLOAT | [time x spin phase x energy x start sector x mass bin] | counts/s/cm2/eV/sr | This variable would be filled with the fill value/NaN in an initial calibration phase. | |
| spin_phase_index | Index of spin phase (1, 2, …, np) | CDF_INT2 | INT | [spin phase] | NA | This variable is prepared to define an axis in a PDS4 label. | |
| energy | Central energy of logarithmic energy steps | CDF_REAL4 | FLOAT | [energy] | eV | ||
| energy_range | Upper and lower limits of energy steps | CDF_REAL4 | FLOAT | [energy x 2(lower, upper)] | eV | ||
| start_sector_index | Index of start sector (0, 1, …, 6) | CDF_INT2 | INT | [start sector] | NA | This variable is prepared to define an axis in a PDS4 label. | |
| stop_sector_index | Index of stop sector (0, 1, …, 7) | CDF_INT2 | INT | [stop sector] | NA | This variable is prepared to define an axis in a PDS4 label. | |
| mass_index | Index of mass bins (0, 1, …, nm) | CDF_INT2 | INT | [mass bin] | NA | This variable is prepared to define an axis in a PDS4 label. | |
| azimuth | Azimuthal angles of the directional counts/flux in a coordinate system fixed to the spinning satellite body | CDF_REAL4 | FLOAT | [start sector] | degree | ||
| elevation | Eleveation angles of the directional counts/flux in a coordinate system fixed to the spinning satellite body | CDF_REAL4 | FLOAT | [start sector] | degree | ||
| quality_flag (tentative) | Data quality flags | CDF_INT2 | INT | [time] | NA | Details are shown below. | |
| mode_flag | Observation mode flags | CDF_INT2 | INT | [time x 18] | NA | Details are shown below. |
The Level-2 data products (Level-2 pre CDF data files) are generated for each spin phase bin (np) in the Count accumulation mode. As a result, 5 data products/CDF files are provided for this mode.
PP_yyyymmdd_rXX-vYY-ZZ.cdfPP = 01, 02, 04, 08, 16yyyymmdd = (year) + (month) + (day)XX, YY, ZZ = release, major, monior numbers| Variable | Description | Data type | Data type in IDL | Dimension | Unit | Time resolution | Remarks |
|---|---|---|---|---|---|---|---|
| epoch | Time labels in the CDF_TT2000 format | CDF_TIME_TT2000 | LONG64 | [time] | ns | ~4 * (num_add_interval_Spin in the observation mode flag) [s] | |
| strtime | Time labels in UTC string | CDF_CHAR | STRING | [time] | UTC | “YYYY-MM-DDThh:mm:ss.ffffffZ” | |
| time_width | Data accumulation period in second | CDF_REAL4 | FLOAT | [time] | s | ||
| mdp_ti | Time indicators (TIs) given by Mission Data Processor (MDP) | CDF_UNIT4 | ULONG | [time] | NA | ||
| sta_s_cnt | Start sector raw count | CDF_REAL4 | FLOAT | [time x spin phase x energy x start sector x start ring] | counts/sample | ||
| tot_sta_r_cnt | Total start ring raw count | CDF_REAL4 | FLOAT | [time x spin phase x energy x start ring] | counts/sample | ||
| tot_sta_s_cnt | Total start sector raw count | CDF_REAL4 | FLOAT | [time x spin phase x energy x xstart sector] | counts/sample | ||
| tot_sto_s_cnt | Total stop sector raw count | CDF_REAL4 | FLOAT | [time x spin phase x energy x stop sector] | counts/sample | ||
| c_sta_s_cnt | Coincident start sector count | CDF_REAL4 | FLOAT | [time x spin phase x energy x start sector] | counts/sample | ||
| c_sto_s_cnt | Coincident stop sector count | CDF_REAL4 | FLOAT | [time x spin phase x energy x stop sector] | counts/sample | ||
| uncorrected_flux | Uncorrected differential number flux. This varialbe is NOT intended for scientific use. The coincident count / corrected flux data are recommended for scientific analysis. | CDF_REAL4 | FLOAT | [time x spin phase x energy x start sector] | counts/s/cm2/eV/sr | This variable would be filled with the fill value/NaN in a later calibration phase. | |
| corrected_flux | Corrected differential number flux | CDF_REAL4 | FLOAT | [time x spin phase x energy x start sector] | counts/s/cm2/eV/sr | This variable would be filled with the fill value/NaN in an initial calibration phase. | |
| spin_phase_index | Index of spin phase (0, 1, …, np) | CDF_INT2 | INT | [spin phase] | NA | This variable is prepared to define an axis in a PDS4 label. | |
| energy | Central energy of logarithmic energy steps | CDF_REAL4 | FLOAT | [energy] | eV | ||
| energy_range | Upper and lower limits of energy steps | CDF_REAL4 | FLOAT | [energy x 2(lower, upper)] | eV | ||
| start_sector_index | Index of start sector (0, 1, …, 6) | CDF_INT2 | INT | [start sector] | NA | This variable is prepared to define an axis in a PDS4 label. | |
| stop_sector_index | Index of stop sector (0, 1, …, 7) | CDF_INT2 | INT | [stop sector] | NA | This variable is prepared to define an axis in a PDS4 label. | |
| start_ring_index | Index of start ring (0, 1, …, 3) | CDF_INT2 | INT | [start ring] | NA | This variable is prepared to define an axis in a PDS4 label. | |
| azimuth | Azimuthal angles of the directional counts/flux in a coordinate system fixed to the spinning satellite body | CDF_REAL4 | FLOAT | [start sector] | degree | ||
| elevation | Eleveation angles of the directional counts/flux in a coordinate system fixed to the spinning satellite body | CDF_REAL4 | FLOAT | [start sector] | degree | ||
| quality_flag (tentative) | Data quality flags | CDF_INT2 | INT | [time] | NA | Details are shown below. | |
| mode_flag | Observation mode flags | CDF_INT2 | INT | [time x 18] | NA | Details are shown below. |
Data quality flags (quality_flag) are tentatively defined as follows.
The PWI team has been considering a common part of the data quality flags for all instruments (b0-b7).
| Bit | Description | Definition | Remarks |
|---|---|---|---|
| b0 | See Quality Note | 0:, 1: see Quality-Note | on MPPE-Wiki |
| b1 | Eclipse | 0:, 1: eclipse | |
| b2 | Maneuver | 0:, 1: maneuver | |
| b3 | MTQ | 0:, 1: MTQ on | |
| b4 | Reserved for common flags | ||
| b5 | Reserved for common flags | ||
| b6 | Reserved for common flags | ||
| b7 | Reserved for common flags | ||
| ENA specific | |||
| b8 | HV on/off | 0: HV on, 1: HV off | |
| b9 | CAL | 0:, 1: CAL | |
| b10 | Reserved for ENA specific flags | ||
| b11 | Reserved for ENA specific flags | ||
| b12 | Reserved for ENA specific flags | ||
| b13 | Reserved for ENA specific flags | ||
| b14 | Reserved for ENA specific flags | ||
| b15 | Reserved for ENA specific flags |
Observation mode flags (mode_flag) are tentatively defined as follows:
| Index | Description | Definition | Remarks |
|---|---|---|---|
| 0 | numE (number of energy bin) | ||
| 1 | numC (number of channel bin (START SECTOR)) | ||
| 2 | numM (number of mass bin) | ||
| 3 | numP (number of phase bin (of output data matrix)) | ||
| 4 | numP0 (number of phase bin in internal calculation) | numP0 = 0x20: energy step 0 (E0) = E4, E1 = E5, E2 = E6, E3 = E7 when numE = 4 E0 = E1 = E4 = E5, E2 = E3 = E6 = E7 when numE = 2 numP0 != 0x20: E0 = E1, E2 = E3, E4 = E5, E6 = E7 when numE = 4 E0 = E1 = E2 = E3, E4 = E5 = E6 = E7 when numE = 2 | |
| 5 | startP (slotID/4 of data processing start) | ||
| 6 | lenP (number of slots/4 in which data are processed (others are just ignored)) | ||
| 7 | cntoffset (Offset of count which is subtracted from count data at LinLog compression ) | ||
| 8 | SVramID (ID of selected SV table ) | ||
| 9 | cntdepth (Depth of count which is referred at LinLog compression) | 0: 32bit, 1: 16bit, 2: 12bit | |
| 10 | num_add_interval_Spin (Number of spin accumulation) | Number of spin = 2 (addSpin), where addSpin is an encoded number of spin in which data are added. (ACCUMMASS, ACCUMCNT, ACCUMTOF modes | |
| 11 | numProcessPckt_inSpin (b in DV17 (applicable for IFE_ENGINEERING, IFE_TABLEREAD, NON-PROCESS modes) ) | 0: 1 of 16 packets in one S/C spin are sent (sent packet: packet 0) 1: 2 of 16 packets in one S/C spin are sent (sent packet: packet 0, 8) 2: 4 of 16 packets in one S/C spin are sent (sent packet: packet 0, 4, 8, 12) 3: 8 of 16 packets in one S/C spin are sent (sent packet: packet 0, 2, 4, 6, 8, 10, 12, 14) 4: 16 of 16 packets in one S/C spin are sent (sent packet: packet 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15) | |
| 12 | adisSENA | ||
| 13 | adisSTBL | ||
| 14 | adisSSTEP | ||
| 15 | adisMENA | ||
| 16 | adisMTBL | ||
| 17 | adisMStep |