Data Set Overview : This data set contains SREM omni-directional fluxes in MeV provided at particular effective energies, converted from the equivalent SREM Level 2 CDF products, which are provided in the EXTRAS directory. Note that the CDF processing levels differ from the CODMAC definition used within these PDS data sets. The SREM CDF Level 0 data are equivalent to the PDS CODMAC Level 2 data while the SREM CDF Level 2 data are equivalent to the PDS CODMAC Level 5 data. These data are useful for determining the energetic particle environment experienced by the Standard Radiation Environment Monitor onboard the Rosetta Orbiter. Processing : Differential fluxes have first been derived from the 'raw' Level 0 CDF count rate data using a dedicated unfolding technique over pre-defined energies. The unfolding technique is based on the regularized Singular Value Decomposition (SVD) method described in [SANDBERGETAL2012], and in the SREMDC_FINAL_REPORT_V1.0.PDF file found in the DOCUMENT directory. The fluxes have then been rescaled according to cross-calibration studies between fluxes before a rescaling step against selected reference datasets. SEPEM Reference Dataset v2.0 (i.e. GOES/EPS fluxes cross- calibrated with IMP-8/GME) has been selected as reference for proton fluxes, while RBSP/MAGEIS spin averaged datasets were selected as a reference for electron fluxes. As a result of this process, the highest energy flux levels derived for the electron data were not reliable. Thus, it was decided to reject entirely these products in the production of this Level 5 data set. As such, only 10 energy channels are made available for electron fluxes. These are #1-#10 in the table on page 48 of the SREMDC_FINAL_REPORT_V1.0.PDF file, available in the DOCUMENT directory. A quality value is also provided alongside the fluxes, giving recommendations on their use, as described in the table below. FPDO: Flux Proton Differential Omnidirectional FEDO: Flux Electron Differential Omnidirectional FQDO_Quality: Flux Q Differential Omnidirectional_Quality where (Q:P,E) Where: ---------------|-------------------------|------------------ FQDO_Quality | Comment | Recommendation ---------------|-------------------------|------------------ FQDO_Quality:0 | SREM count-rate data | Use FQDO | determined by charged | | particle fluxes Q. | ---------------|-------------------------|------------------ FQDO_Quality:1 | SREM count-rate data | Use FQDO with | most likely determined | some caution | by charged particle | | fluxes Q. | ---------------|-------------------------|------------------ FQDO_Quality:2 | SREM count-rate | Do not use FQDO | contaminated by | | various sources. None | | criterion is satisfied | ---------------|-------------------------|------------------ FQDO_Quality:3 | SREM count-rate | Do not use FQDO | dominated by fluxes of | | non-Q particles. | ---------------|-------------------------|------------------ FQDO_Quality:5 | SREM count-rate data | Do not use FQDO | dominated by background | | (cosmic, detector | | electronics) | ---------------|-------------------------|------------------ (Table above is taken from SREMDC_Final_Report_V1.0.PDF, available in the DOCUMENT directory) Data : One data product is provided per day of measurement. Data products are named according to the following convention: SREM_L_YYYYMMDD.EXT Where:  is the CODMAC processing level (2 for the count rate data and 5 for the derived proton and electron flux data). YYYMMDD is the date of the observation. EXT is the file extension (TAB for the ASCII data table and LBL for the detached PDS label file). All data products are formatted as plain ASCII tables and have an associated detached PDS label. The CODMAC Level 5 data are given as protons and electrons energy values and their associated quality values, with measurements time tagged at the middle of the time interval (centered). The LBL file contains metadata with information about the instrument, mission, any important instrument parameters or measurement parameters, start and stop time of the measurement, and the pointer to the TAB object. The data table is structured as follows: - A first row with text headers defining each column in the subsequent data table. For each column containing the proton and electron energy measurements, the central energy value of the channel in MeV is used. - A data table (called SREM_DATA_TABLE) with each row containing the following columns: Time: A time tag per measurement, at the center of the observation. Proton Energies: 13 proton energy values in MeV. Proton Quality: An indication of the quality of the proton measurements. Electron Energies: 10 electron energy values in MeV. Electron Quality: An indication of the quality of the electron measurements. IMPORTANT NOTES: - As noted above, the time values provided mark the center time of the observation. - The PDS keyword MISSING_CONSTANT, which is provided in every LBL file, indicates the value (-1.0E31) used in the data table if no measurement data is available. Any zero values in the data tables are real measurements. - The quality values used are described above, and are also provided directly within the DESCRIPTION field of each LBL file. - As noted above, the electron data set was cross-calibrated with RBSP/MAGEIS spin averaged data. It has been noted that as a result of this process the highest energy flux levels derived were not reliable. Thus, it was decided to reject entirely these products in the production of the Level 2 CDF data. As such, only 10 energy channels are made available, #1-#10 in the table on page 48 of the SREMDC_FINAL_REPORT_V1.0.PDF file, available in the DOCUMENT directory. Software : No software is provided with this data set. All products are provided as plain ASCII tables and can be read using the standard freely available NASAView and ReadPDS software packages. Media/Format : The data set will be delivered and kept online.

All data have been reviewed by the SREM team to check for data set completeness and screened for non-physical values such as negative energy. No obvious errors have been found in the data at this time. Data have also been passed through two Rosetta independent science reviews, and all items raised have been addressed.