Ginga LAC observation data
Overview
Description
This is the observation data obtained by the Large Area Counter (LAC) onboard Ginga satellite. It contains telemetry data (First Reduction File =FRF) and summary lists of the LAC housekeeping and attitude information (LACDUMP files). Each FRF is made per one satellite-operation pass (a contact or remote pass), while LACDUMP is per one day. These files are NOT divided at the times of maneuvers and therefore may contain data of previous and/or next targets as well as those during maneuvers. The recommended background data are simply selected from all the blank sky observations performed within 3 days. Before using them, however, users are strongly advised to check if they are really applicable for background subtraction in each case.
Data Analysis
Currently, users can carry out (1) spectral analysis and (2) timing analysis of LAC data from pointing-mode observations. Detailed analysis of LAC scan-mode data (such as fitting of the scan profile) is not supported at present.
Please see the Data Analysis page for details.
Keywords
Version
1.0
Publication Date
2004
Temporal Coverage
from 1987-03-05 to 1991-10-29
Identifier
- Title: Ginga LAC observation data
- ID: darts:ginga-lac-data
- URL: https://darts.isas.jaxa.jp/datasets/darts:ginga-lac-data
Data Distribution
https://data.darts.isas.jaxa.jp/pub/ginga/GINGA-LAC-1.0/ (application/fits, text/plain, application/pdf, application/postscript)
Data Structure (auto-generated summary)
pub/ginga/GINGA-LAC-1.0/
โโโ 00readme.txt
โโโ ginga_obs.dump, .txt
โโโ dat/
โ โโโ 870309909/
โ โโโ 870409800/
โ โโโ ...
โ โโโ {NNNNNNNNN}/
โ โโโ frf/ (same as fits_frf/{YYMM}/FR{YYMMDD}.[R|S]{NNNN}.fits.gz)
โ โโโ frf_bgd/ (same as fits_frf/{YYMM}/FR{YYMMDD}.[R|S]{NNNN}.fits.gz)
โ โโโ lacdump/ (same as lacdump/J{NNNNNN})
โ โโโ lacdump_bgd/ (same as lacdump/J{NNNNNN})
โโโ doc/ [not expanded]
โโโ fits_frf/
โ โโโ README
โ โโโ check_max_tdiff.pl, .log
โ โโโ select_large_maxdiff.pl
โ โโโ time_correction.pl
โ โโโ time_correction_FR900127.R0517.pl
โ โโโ 8703/, 8704/, ..., {YYMM}/
โ โโโ time_correction.log
โ โโโ FR{YYMMDD}.[R|S]{NNNN}.fits.gz
โโโ frf/ (same as fits_frf/{YYMM}/FR{YYMMDD}.[R|S]{NNNN}.fits.gz)
โโโ lacdump/
โโโ README_in_Japanese
โโโ J{NNNNNN}
Creator
- ISAS > Institute of Space and Astronautical Science (ๅฎๅฎ็งๅญฆ็ ็ฉถๆ) [ROR: 034gcgw60]
Contributor
- GSFC > Goddard Space Flight Center (GSFC > ใดใใผใๅฎๅฎ้ฃ่กใปใณใฟใผ) [ROR: 0171mag52]
- University of Leicester (ใฌในใฟใผๅคงๅญฆ) [ROR: 04h699437]
Copyright Holder
- JAXA > Japan Aerospace Exploration Agency (ๅฎๅฎ่ช็ฉบ็ ็ฉถ้็บๆฉๆง) [ROR: 059yhyy33]
- ISAS > Institute of Space and Astronautical Science (ๅฎๅฎ็งๅญฆ็ ็ฉถๆ) [ROR: 034gcgw60]
License
References
- Makino, F. et al., (1987) Astrophysical Letters - The X-ray Astronomy Satellite ASTRO-C https://ui.adsabs.harvard.edu/abs/1987ApL....25..223M/abstract
- Turner, M. J. L. et al. (1989) Publications of the Astronomical Society of Japan - The large area counter on Ginga. https://ui.adsabs.harvard.edu/abs/1989PASJ...41..345T%2Fabstract
- Hayashida, K. et al. (1989) Publications of the Astronomical Society of Japan - The origin and behavior of the background in the large area counters on GINGA and its effect on the sensitivity https://ui.adsabs.harvard.edu/abs/1989PASJ...41..373H%2Fabstract