The Clipper dictionary contains classes that describe aspects of the Europa Clipper Orbiter mission and related instruments. -T. Hare, Initial version 1.0.0.0 , (2023-07-20) provide initial generic mission attributes -T.Hare, initial updates for SUDA (2023-15-11) -Ray Espiritu (APL, 2023-11-29) added the following EIS keywords: filter_used nframes Detector_Region class containing: readout_start_row readout_end_row row_step_size readout_start_col readout_end_col row_time_padding row_offset tdi_rows modified the following EIS keywords: mode -Ray Espiritu (APL, 2024-02-25) -added the following EIS keywords: Checkline_Row class containing: detector_row readout_order -deleted the following EIS keywords. These were placeholders from LROC and are not used by EIS: instrument_mode_id exposure_code lookup_table_type interframe_delay spacecraft_clock_preroll_count preroll_time dac_reset_level line_code line_exposure_code line_exposure_duration -Ray Espiritu (APL, 2024-02-27) -added the following keywords: gain detector_temp fpm_temp1 fpm_temp2 frame_capture_start_count gimbal_alongtrack gimbal_crosstrack -T.Hare (2024-03-04) - removed ETHEMIS until the team is ready to add attributes Defines the detector row and readout order for a checklines image. A Checkline_Row class is created for every detector row used as a checkline. For example, if there were 3 checklines readout for a given checklines image then this class would appear three times in the framing image label to define each checklines row. This class does NOT appear in the label for the checklines image. Instead there is a Detector_Region class for each checkline. The class contains the start/end readout rows, start/end readout columns, and row step size describing the region of the detector that is contained in an EIS image. For example, raw masked row images, where the top and bottom regions of the detector are read out in a single framing image. One instance of this object should be provided for each region that is contained in the image. The class contains all the instrument specific attributes for the EIS WAC and NAC. The Observation_Information class provides information about a science observation. The class contains all the events for SUDA instrument. The class contains all the instrument specific attributes for the SUDA instrument. This section contains the simpleTypes that provide more constraints than those at the base data type level. The simpleTypes defined here build on the base data types. This is another component of the common dictionary and therefore falls within the common namespace. A hexadecimal representation of the Accountability Identifier (AID) which serves as a globally unique identifier across all instruments and mission phases for an observational activity onboard the spacecraft. Data tagged with a given AID is collected into an Accountable Data Product (ADP) on the ground and will result in one or more associated PDS data products in the archive. The AID is a 32-bit unsigned integer which contains three fields: Instrument ID (4-bits), Orbit Number (9-bits) and Data Acquisition ID (19-bits). The hexadecimal string value is prefixed with “0x”. _TBD _TBD _TBD Category determined by Flight Software Processing. Indicates if lossless compression was commanded (0=no, 1=yes) The data_quality_desc attribute describes the data qualities associated with a data_quality_id attribute. The data_quality_id attribute provides a numeric key which identifies the quality of data available for a particular time period. The data_quality_id scheme is unique to a given instrument and is described by the associated data_quality_desc attribute. Part of the Checkline_Row class. Identifies the detector row used in the checkline image. This row is readout multiple times in a checklines image and is used for jitter correction. measurement obtained by EIS detector temperature sensor The Playback and Flyby periods together comprise an Encounter, defined as the period of time during the Tour beginning two days before the targeted closest approach of a Jovian moon, and ending two days before the next targeted closest approach of a Jovian moon. While most Jupiter orbits include a targeted flyby, there are some phasing orbits without a targeted flyby; in these cases, an encounter will span more than one orbit. Valid values consist of a three-character identifier (e.g., EO1, G02, etc.) where "E01" indicates the first encounter with Europa and "G02" indicates the second encounter with Ganymede and so on. There is one more additional special value of "XXX" representing data collected during cruise up until the first encounter. _TBD _TBD _TBD Milliseconds of the last event within this AID (time in milliseconds since epoch). Epoch defining the zero point of relative times in year month day UTC. For example: "YYYY-MM-DDThh:mm:ss.ssssssZ" Number of events contained within a given AID. Event-specific event identifier from the FPGA Header. FPGA event time (time of event trigger in milliseconds since epoch). Indicates the region of the detector that was used to generate an EIS image. This includes the clear and color stripe filters as well as the clear framing area of the detector. measurement obtained by EIS focal plane module (FPM) temperature sensor 1 measurement obtained by EIS focal plane module (FPM) temperature sensor 2 timestamp of the EIS Digital board (DB) receipt of the first detector line read out for a given frame. The detector can read out lines from multiple colors in the same frame and send each color to a separate TDI collection in memory where each TDI collection is associated with a unique AID. However, each AID packet will have the same frame_capture_start_count for a given frame. Thus, need this value to derive the actual starttime for a given TDI row. Gain state of the EIS detector when the image was taken. Gimbal motor position in steps in the along-track direction of spacecraft motion. This is measured as an offset from the "home" position. 0.046875 degrees per step. Gimbal motor position in steps in the cross-track direction of spacecraft motion. This is measured as an offset from the "home" position. 0.046875 degrees per step. _TBD _TBD _TBD The mission_phase_name identifies a time period within the mission. Indicates whether the EIS detector was commanded to take images in framing or pushbroom mode. Records the commanded number of frames for an EIS observation. A single observation may consist of multiple images with the same detector settings, therefore number of frames collected may not necessarily correlate to the number of rows in the image. The orbit_number attribute identifies the number of the orbital revolution of the spacecraft around Jupiter. Prior to JOI (i.e., from launch through cruise including gravity assists), the orbit value will be 0. After JOI, starting with the first apojove, the value will increase by 1 with each revolution around Jupiter incrementing at each subsequent apojove. The producer_institution_name attribute identifies a university, research center, NASA center, or other institution associated with the production of a data product. The product_type attribute indicates the processing level of an individual data product. The product_version_id attribute identifies the version of an individual data product. Maximum amplitude (raw value) for ion waveform (QI). Mean of selected ion data (QI). Signal to Noise ratio squared for ion data (QI). Maximum amplitude (raw value) for target waveform (QT). Mean of selected target data (QT). Signal to Noise ratio squared for target (QT). Maximum amplitude (raw value) for velocity waveform (QV). Mean of selected velocity waveform data (QV). Signal to Noise ratio squared for velocity waveform (QV). The rationale_desc attribute describes the rationale for performing a particular observation. The EIS detector can be commanded to read out portions of the detector in pre-defined 256 column sections known as ports. This keyword defines the ending column of the detector to be read out. Index starts at column 0 and ends at column 4095. All rows in a given EIS image will end at this column in the detector. For a framing image this is the end row of the detector to be read out, For a TDI image this is the end row of the TDI rows to be summed together. Part of the Checkline_Row class. Provides an ordering of the detector rows that are used to generate the checklines image. The Checkline_Row with the lowest valued readout_order is read first, followed by the next higher readout_order, and so on. After the Checkline_Row with the highest valued readout_order is read out the instrument goes back to the lowest valued readout_order. The EIS detector can be commanded to read out portions of the detector in pre-defined 256 column sections known as ports. This keyword defines the starting column of the detector to be read out. Index starts at column 0 and ends at column 4095. All rows in a given EIS image will start at this column in the detector. For a framing image this is the starting row of the detector to be read out, For a TDI image this is the start of the TDI rows to be summed together. Release_number is the number of a scheduled release of data from PDS. The first data release would be Release 1. The release_number for a given product is always the first release in which it appears, and does not change if the product is revised later. Number of readout rows to wait before reading out a given row to refresh the accumulation of photons on a given row in the detector. This allows for shorter exposure times than would normally occur if the detector waits until all rows are read out once before refreshing a given row. This value affects image exposure time. Row increment step size when reading from readout_start_row to readout_end_row. For a step size of 1 the detector rows are contiguous. For a step size of 2 the detector skips the readout of every other row. The value can be negative in which case the readout_start_row must be greater than the readout_end_row. The step size will be inclusive of the readout_end_row. For example, if the readout_start_row is 1 and readout_end_row is 5 and row_step_size is 2 then the rows read out are 1, 3, 5. Additional time that the detector readout state machine will wait before moving to the next line. This value affects image exposure time. The spacecraft_clock_count_partition attribute indicates the clock partition active for the spacecraft_clock_start_count and spacecraft_clock_stop_count attributes. The spacecraft_clock_start_count attribute provides the value of the spacecraft clock at the actual start of image acquisition. There may be small inconsistencies with start_date_time due to varying correlation between UTC and the spacecraft clock. For purposes of data analysis the spacecraft clock value should be used. The format of this field is compatible with the NAIF Toolkit software where s = seconds converted from the clock's coarse counter and m = seconds converted from the clock's fine counter. The spacecraft_clock_stop_count attribute provides the value of the spacecraft clock at the actual end of image acquisition. There may be small inconsistencies with stop_date_time due to varying correlation between UTC and the spacecraft clock. For purposes of data analysis the spacecraft clock value should be used. The format of this field is compatible with the NAIF Toolkit software where s = seconds converted from the clock's coarse counter and m = seconds converted from the clock's fine counter. Milliseconds of the first event within this AID (time in milliseconds since epoch). Number of detector rows added together by the DPU in order to perform digital time delay integration, resulting in one TDI row in the output image. _TBD _TBD _TBD _TBD _TBD _TBD _TBD _TBD Selected TOF waveform mean. Total number of TOF peaks found. Signal to Noise ratio squared of selected TOF waveform. The upload_id attribute describes a spacecraft command set that is associated with the given data product.