urn:nasa:pds:vl_seis_derived:data_derived:vpds_event_xamp 1.0 1.21.0.0 Product_Observational 2024-05-03 1.0 Initial version. 1976-09-04T00:53:01Z 1978-03-17T06:52:23Z Viking Mission urn:nasa:pds:context:investigation:mission.viking data_to_investigation Viking Lander 2 Host urn:nasa:pds:context:instrument_host:spacecraft.vl2 is_instrument_host Seismometer for VL2 Instrument urn:nasa:pds:context:instrument:seis.vl2 is_instrument Mars Planet urn:nasa:pds:context:target:planet.mars data_to_target event_mode Primary_Mission Extended_Mission 0 560 vpds_event_xamp.csv 2016-12-12 0 PDS DSV 1 This file is the full raw X-axis Event mode envelope (amplitude) record of the Viking Seismometer data. In Event mode, readings were compressed in the instrument itself by recording the number of positive-going zero crossings in a 1.01s interval, and recording an envelope value generated by digital filtering. For details see VPDS_EVENT_XYZAMP_FORMAT.TXT in the DOCUMENT directory. Time is Local Lander Time. 256087 Carriage-Return Line-Feed Comma 6 1 archived_record_number 1 ASCII_Integer An ordinal number indicating the record in the present file and in the corresponding raw archive files. seismic_sol 2 ASCII_Real he decimal sol number on which the data were acquired. The mission time in decimal Sols (i.e. sol+(hr*3600.0+min*60.0+sec)/88775.24). Landing day is sol 0. data_acquisition_sol 3 ASCII_Integer The sol number on which the data were acquired. Landing day is sol 0. data_acquisition_hour 4 ASCII_Integer The hour of acquisition end. data_acqusition_minute 5 ASCII_Integer The minute of acquisition end. data_acquisition_second 6 ASCII_Integer The second of acquisition end. Note that the data in the VUSA file are reported at 1Hz, thus the start of acquisition is typically 51 seconds before this time. 1 51 1 0 x_axis_envelope 1 ASCII_Integer The set of 51 X-axis envelope readings. 1 digital unit (DU) corresponds roughly to 2nm at 3Hz (see seismic_dataset.txt). vpds_event_xamp.lbl 0 PDS3 Original PDS3 label. Carriage-Return Line-Feed