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Ginga Databases at LEDASThe
following Ginga databases are currently held by the LEDAS:
- LAC Products Database. The GINGALAC database contains a summary of the Ginga
target observations with the large area counter (LAC). It has associated data
products files, including reduced data cubes, light curves and spectra. It is
the recommended route to Ginga data for inexperienced Ginga users.
- GINGABGD - LAC Background Observations. The GINGABGD database contains a
summary of the contents of the Ginga pointed observations of (nominally
empty) background fields. It too has associated data products files, and is another
valuable resource for quick Ginga data reductions.
- FRF Log. The GINGAFRF database contains a summary of the contents of the raw
First Reduction Files (FRFs). The database is a conversion of the Ginga
kiroku (or log sheets) provided by ISAS. The raw data files in HDS format are
available using this table.
- LAC Observation Log. The GINGALOG database contains selected information from
the LAC. It is the the most basic log file available (as compared to GINGAMODE,
see below). GINGALOG is a subset of the same LAC dump file used to create GINGAMODE;
GINGALOG contains a listing only whenever the `ACS monitor` changes.
- LAC Mode. The GINGAMODE database also contains selected information from the
LAC. Each entry is the first record of a series of observations having the same
values of the following: `BITRATE`, `LACMODE`, `DISCRIMINATORS`, or `ACS MONITOR`.
When any of these changes, a new record is written.
- LAC Raw Data. The GINGARAW database gives access to the low-level GINGA LAC
data as FITS format files. Data received from Ginga were stored in First Reduction
Files (FRFs) which mirror the telemetry stream from the satellite. The FITS Ginga
data are the FRF files converted into FITS format from their native format (ADP
grant, PI Corbet, at Penn State).
For more details, see the database help
for each table.