TGO NOMAD Partially Processed Data

Instrument: NOMAD

PDS4 Collection: urn:esa:psa:em16_tgo_nmd:data_partially_processed

PDS4 Bundle: urn:esa:psa:em16_tgo_nmd

NOMAD Partially Processed data are converted from the raw data by the SOC. Partially Processed data files contain the same fields as the raw data, except that housekeeping temperatures and voltages have been converted into physical units e.g. Celsius, Volts, Amps, etc.

Science data, including attributes LAST_TELECOMMAND_SUBDOMAIN_1 to 6 have been left unchanged. Detailed descriptions of each parameter are given in section 5.2 of NOMAD Experiment to Archive Interface Control Document and conversion formulae can be found in the appendix; further details are included in the NOMAD Data Operations Handbook.

NOMAD Partially Processed data, as stored on the ESA DataStore and PI institute file systems, have the following file names:

nmd_par_<comm_type>_<pkt_type>_<YYYYMMDD1>T<hhmmss1>-<YYYYMMDD2>T<hhmmss2>-<pkt_type_no>-<obs_type>-<orbit_no>-<obs_number>-<version>

where:

<comm_type> is the communication type used by NOMAD.

"hk" designates packets sent via the 1553 connection

"sc" for packets sent via SpaceWire.

<pkt_type> is the packet type sent by NOMAD.

“so” for the SO channel science data

“lno” for LNO data

“uvis” for UVIS data

“hk1” and “hk2” for housekeeping packets

“Sinbad” for data from SINBAD

<YYYYMMDD1>T<hhmmss1> is the observation start time in years, months, days, hours, minutes and seconds respectively.

<YYYYMMDD2>T<hhmmss2> is the observation end time in years, months, days, hours, minutes and seconds respectively.

<pkt_type_no> is the NOMAD packet type number as described in section 2.6.3.1 of

NOMAD Experiment to Archive Interface Control Document and NOMAD Data Operations Handbook. For example,

SO science data is sent in packets of type 22 or 122

LNO are types 25 or 125, etc.

UVIS has three packet types (27, 28 and 29) all sent via Spacewire

SINBAD (NOMAD central processor) system logs is sent in packets of type 60

Telecommand is sent in packets of type 20

<obs_type> is the observation type as determined by the ESA downlink data processing pipeline.

<orbit_no> is the TGO orbit number. 0 = cruise phase.

<obs_no> is the observation number within the given orbit.

<version> is the pipeline version number.

Note that when the products are delivered to the archive, the version number is appended. Therefore a typical sent product would be named as follows:

nmd_par_sc_lno_20161120T235932-20161121T004931-25-9999-3_2.0.xml

nmd_par_sc_lno_20161120T235932-20161121T004931-25-9999-3_2.0.tab

The version number is removed when delivered to the PSA archive, therefore archived products would be renamed to:

nmd_par_sc_lno_20161120T235932-20161121T004931-25-9999-3.xml

nmd_par_sc_lno_20161120T235932-20161121T004931-25-9999-3.tab