TGO NOMAD Raw Data

Instrument: NOMAD

PDS4 Collection: urn:esa:psa:em16_tgo_nmd:data_raw

PDS4 Bundle: urn:esa:psa:em16_tgo_nmd

NOMAD Raw data are returned from the spacecraft. In ODE they are classified in 3 groups, including Raw House Keeping Data, Raw Science Data, and Telecommand History Product.

Raw House Keeping Data have housekeeping 1 product and housekeeping 2 product. Detailed descriptions of each parameter of the housekeeping products are given in sections 5.2.1 and 5.2.2 in NOMAD Experiment to Archive Interface Control Document. The housekeeping 2 product is purely for engineering purposes and contains no useful information for PSA users.
Raw Science Data include SO 22 and 122 Science Product, LNO 25 and 125 Science Product, UVIS 27 Science Product, UVIS 28 Science Product, UVIS 29 Science Product, and SO/LNO Science Data.

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

nmd_raw_<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_raw_sc_sinbad_20200123T001247-20200123T001247-60-9663-1_2.0.xml

nmd_raw_sc_sinbad_20200123T001247-20200123T001247-60-9663-1_2.0.tab

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

nmd_raw_sc_sinbad_20200123T001247-20200123T001247-60-9663-1.xml

nmd_raw_sc_sinbad_20200123T001247-20200123T001247-60-9663-1.tab