MEX-M-ASPERA3-2-EDR-NPI

Overview: The Neutral Particle Imager (NPI) measures integral ENA fluxes in the energy range 0.1 to 60 keV to help satisfy the following scientific objectives: 1. Determine the instantaneous global distributions of plasma and neutral gas near Mars 2. Energy deposition from the solar wind to the ionosphere 3. Search for the solar windPhobos interactions Parameters: All NPI data products have the same format and parameters, and each row (data file record) in the NPI SPREADSHEET data products has eight (8) COLUMN objects (parameters): 1. Start Time Begin Date/Time in UTC of data samples 2. Stop Time Ending Date/Time in UTC of data samples 3. Data Type Name either SENSOR or MODE. The SENSOR rows are the NPI science data for each sector (32 sectors). The MODE rows contains informational data like Accumulation Time and MCP Mode. 4. Data Type Id Numeric ID indicating either SENSOR or MODE. 5. Data Name Short description for data on that row. For example Sector 0 for NPI sector 0 science data (SENSOR row), or Accumulation Time for informational data (MODE row). 6. Data Unit Indicates the data unit (c/acc for SENSOR data, unitless for MODE data). 7. Values These are the actual data values. For NPI, there is one value per row (sector). 8. Data Quality Value Quality indicator for the data on that row. See CONFIDENCE_LEVEL_NOTE under Data Coverage/Quality for valid values and descriptions. Data Products: The only Standard Data Product for NPI PSA Level 1b (EDR) is: 1. NPINORM_C_ACC Neutral Particle Imager NORMal mode data in Counts / ACCumulation units. Ancillary Data: It is important for ASPERA3 science studies to know where in space and time the Mars Express spacecraft and ASPERA3 instruments are located and what objects (Sun, Mars, Earth, Phobos, Deimos) are in the fields of views. The ASPERA3 view directions for each sensor can be derived using the SP truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]

概述：中性粒子成像仪（NPI）测量0.1至60 keV能量范围内的积分能谱通量，以助实现以下科学目标：1. 确定火星附近等离子体和中性气体的瞬时全球分布；2. 太阳风对电离层的能量沉积；3. 寻找太阳风与火星卫星佛波斯之间的相互作用。参数：所有NPI数据产品均具有相同的格式和参数，NPI电子表格数据产品中的每一行（数据文件记录）包含八个（8）列对象（参数）：1. 开始时间，数据样本的UTC起始日期/时间；2. 结束时间，数据样本的UTC结束日期/时间；3. 数据类型名称，为SENSOR或MODE之一。SENSOR行包含每个扇区（32个扇区）的NPI科学数据，MODE行包含累积时间、MCP模式等信息性数据；4. 数据类型ID，表示SENSOR或MODE的数值ID；5. 数据名称，对当前行数据的简要描述。例如，NPI扇区0的科学数据（SENSOR行）为“扇区0”，信息性数据（MODE行）为“累积时间”；6. 数据单位，表示数据单位（SENSOR数据为c/acc，MODE数据无单位）；7. 值，这些是实际的数据值。对于NPI，每行（扇区）有一个值；8. 数据质量值，表示该行数据的质量指标。请参阅数据覆盖/质量下的CONFIDENCE_LEVEL_NOTE了解有效值和描述。数据产品：NPI PSA Level 1b（EDR）的唯一标准数据产品为：1. NPINORM_C_ACC，中性粒子成像仪NORM模式数据，单位为计数/累积单位。辅助数据：对于ASPERA3科学研究而言，了解火星快车号飞船和ASPERA3仪器在空间和时间中的位置，以及视场中的物体（太阳、火星、地球、佛波斯、戴摩斯）至关重要。每个传感器的ASPERA3观测方向可以通过SP截断方法推导出来，请参阅实际数据以获取全文[截断，请参阅实际数据以获取全文]。