2.3.1 spase://CNES/NumericalData/CDPP-AMDA/Rosetta/LAP/ros-lap-nel plasma density (NEL) Plasma density which contains the highest time resolution cross-calibrated density data, when RPC-MIP is not delivering cross-calibrated density products 2016-10-15T14:08:29Z This data set is based on LAP data with use of a long-term LAP-MIP cross calibration for some time intervals when MIP-LAP density is not available. Plasma density derived from individual current measurements or floating potential measurements on one probe. This is a preliminary data set which will be replaced by another in a few months. spase://CNES/Person/Anders.Eriksson PrincipalInvestigator spase://CNES/Person/Erik.Johansson DataProducer RPC User Guide http://amda.irap.omp.eu/help/parameters/RPC_USER_GUIDE.PDF RPC LAP User Guide http://amda.irap.omp.eu/help/parameters/RO-IRFU-LAP-UG.PDF RPC-LAP to Planetary Science Archive Interface Control Document http://amda.irap.omp.eu/help/parameters/RO-IRFU-LAP-EAICD.PDF RPC-LAP Report on cross-calibration of LAP data to measurements by other RPC instruments http://amda.irap.omp.eu/help/parameters/RO-IRFU-LAP-XCAL.PDF spase://SMWG/Repository/CNES/CDPP-AMDA Online Restricted http://amda.cdpp.eu NetCDF PSA RO-C-RPCLAP-5-xxx-NEL-V1.0 spase://CNES/Instrument/CDPP-AMDA/Rosetta/LAP ThermalPlasma 2014-03-24T08:12:59Z 2016-09-30T10:31:16Z PT0.016S PT128S It is highly recommended to take into account quality value while working with plasma density. * Parameter n_e_good corresponds to n_e quality gt 0.2 * Parameter n_e - all n_e quality values * Note that you can colorize n_e parameter with the quality value (use ColoredParameter field of Plot Interface). * Please always download quality value along with the n_e parameter. Data Source : * 1 - Downsampled floating potential measurement for an illuminated LAP1 * 2 - Downsampled floating potential measurement for an illuminated LAP2 * 3 - Vz for LAP1 * 4 - Vz for LAP1, but using a linearly extrapolated sweep Quality Flag : A quality flag is a (base 10) integer that is constructed in the two steps below: * Add together the constants associated with the relevant quality-related effects listed below. Note that these constants are chosen such that every digit represents up to three true/false values for the presence/absence of three specific separate quality-related effects. * Should the three quality-related effects be irrelevant for the given data product, then that digit is replaced by the digit “9”. Quality flag event description : * +1 - Low quality sweep analysis model fit * +2 - One of two meanings: (1) Low sample size; an average is based on fewer data points than nominal (due to filtering or otherwise) and applies to sweep steps and downsampled time series. (2) zero-padding; zeros replace lost samples for the purpose of calculating PSD. * +10 - One of two meanings: (1) Sweep data product and data products based on sweeps: SAA rotation of more than 0.05° during sweep. (2) Downsampled time series data product: Bias change within the 32 s downsampling period. * +20 - Probe in partial or full shadow * +100 - Rosetta wheel off-loading (WOL) or Orbit-control-maneuver (OCM) * +200 - One of two meanings: (1) For LAP1: LDL disturbance (LAP2 in LDL mode); (2) For LAP2: Contamination signature possibly present * +400 - Saturation Example: suppose that one encounters the quality flag “109”. 109 = 100 + 9 means (1) that there is an ongoing wheel off-loading (+100), and (2) that the quality-related effects associated with +1 and +2 cannot occur even in principle for the kind of data that one is looking at. n_e_good (qual_nel> 0.2) ros_lap_nel_good Plasma density which contains the highest time resolution cross-calibrated density data, when RPC-MIP is not delivering cross-calibrated density products. Quality value > 0.2 cm^-3 TimeSeries 0.0 n_e (nel) ros_lap_nel Plasma density which contains the highest time resolution cross-calibrated density data, when RPC-MIP is not delivering cross-calibrated density products cm^-3 TimeSeries -1.e+09 n_e : qual ros_lap_nel_q Quality value in the range 0 (worst) to 1 (best). Corresponds to goodness of fit or how well the model fits the data. TimeSeries data source ros_lap_nel_s TimeSeries quality flag ros_lap_nel_f Quality flag constructed as the sum of multiple terms, depending on what quality related effects are present. Each digit is either in the range 0 (best) to 7 (worst), or 9 (not used) TimeSeries