GINGAMODE ivo://nasa.heasarc/gingamode NASA/GSFC HEASARC ISAS; HEASARC 2026-04-10 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Observation The GINGAMODE database table contains selected information from the Large Area Counter (LAC) aboard the third Japanese X-ray astronomy satellite Ginga. The Ginga experiment began on day 36, 5 February 1987 and ended in November 1991. Ginga consisted of the LAC, the all-sky monitor (ASM) and the gamma-ray burst detector (GBD). The satellite was in a circular orbit at 31 degree inclination with apogee 670 km and perigee 510 km, and with a period of 96 minutes. A Ginga observation consisted of varying numbers of major frames which had lengths of 4, 32, or 128 seconds, depending on the setting of the bitrate. Each GINGAMODE database entry consists of data from the first record of a series of observations having the same values of the following: "BITRATE", "LACMODE", "DISCRIMINATOR", or "ACS MONITOR". When any of these changed, a new entry was written into GINGAMODE. The other Ginga catalog database, GINGALOG is also a subset of the same LAC dump file used to create GINGAMODE. GINGALOG contains a listing only whenever the "ACS monitor" (Attitude Control System) changes. Thus, GINGAMODE monitors changes in four parameters and GINGALOG is a basic log database mapping the individual FITS files. Ginga FITS files may have more than one entries in the GINGAMODE database. Both databases point to the same archived Flexible Image Transport System (FITS) files created from the LAC dump files. The user is invited to browse though the observations available from Ginga using GINGALOG or GINGAMODE, then extract the FITS files for more detailed analysis. The Ginga LAC Mode Catalog was prepared from data sent to NASA/GSFC from the Institute of Space and Astronautical Science (ISAS) in Japan. <p> Duplicate entries were removed from the HEASARC implementation of this catalog in June 2019. This is a service provided by NASA HEASARC . https://heasarc.gsfc.nasa.gov/W3Browse/all/gingamode.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=gingamode& GET text/xml 180 99999 true 326.82822 38.652287 1 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=gingamode GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_gingamode&Action=More+Options&Action=Parameter+Search&ConeAdd=1 GINGA 1 X-ray public gingamode Ginga LAC Mode Catalog magnetic_rigidity Magnetic Rigidity float nullable superframe_number Super-frame Number short nullable dec Declination degree pos.eq.dec;meta.main double nullable acs_monitor Attitude Control System Monitor char nullable exposure Time on source in seconds s time.duration;obs.exposure float nullable sud_count_rate SUD Count Rate ct/s float nullable cindex Starting Index char nullable skyview View of detector at Interval Start char nullable bii Galactic Latitude degree pos.galactic.lat float nullable end_time Observation Stop Time mjd time.end;obs double nullable discriminator Discriminator Setting char nullable lac_mode LAC Mode at Start of Interval char nullable transmission Transmission at Interval Start float nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable pim_count_rate PI Monitor Count Rate ct/s float nullable no_of_records Number of Records within Interval int nullable lii Galactic Longitude degree pos.galactic.lon float nullable "__z_ra_dec" System unit vector column double nullable "__row" System index column char nullable bitrate Bit Rate Flag char nullable "time" Observation Start Time mjd time.start;obs double nullable low_count_rate Low Energy Band Count Rate ct/s float nullable high_count_rate High Energy Band Count Rate ct/s float nullable name Target Designation at Interval Start meta.id;meta.main char nullable "__x_ra_dec" System unit vector column double nullable file_lcurve FITS File Name char nullable "__y_ra_dec" System unit vector column double nullable