The Pipeline Processing (PP) produces quite a number of useful products which allow a first look at the data, but can overwhelm the user by their sheer numbers. The first place to look is the INDEX.HTM page which organizes the presentation of the data and provides links to other PP pages. The INDEX.HTM page also lists general observation information (target, date, time, etc.) and instrument modes.
The INDEX.HTM page provides links to various observation summary pages, which have names with the following nomenclature:
PP data contain some immediately useful data products such as calibrated photon event lists, source lists, and images. While there are a large number of products which come in a single directory, they can be associated in up to 15 groupings; see Table 5.2. (The number of groups can vary depending on the number of operational instruments, e.g., if the OM is turned off there are no OM products.) Further information on each of these groupings and associated files, such as file contents, file types, and how they may be viewed, can be found in Table 5.3. Each group has an associated HTML file which organizes access to the files and provides a limited description of them. The names of the HTML files are of the following form:
Group ID | Contents |
PP files | |
PPSDAT | Contains the Calibration Index File (CIF) used in the pipeline processing (*CALIND*), |
PPS information, and the attitude history time series (*ATTTSR*) in gzipped FITS | |
or ASCII format. | |
PPSGRA | Contains the OM tracking history plots, PPS, EPIC, OM, RGS observation, and PPS |
run summaries. NOTE: CHECK THESE OUT | |
PPSMSG | ASCII file containing pipeline processing report |
EPIC files | |
CRSCOR | Contains PDF files of POSS II finding charts, HTML files of cross correlations |
with the SIMBAD data base, FITS tables for the detected sources | |
EANCIL | Contains the exposure maps in a variety of energy bands and the source-detection |
sensitivity maps for the EPIC instruments. The sensitivities are in units of | |
counts s corrected for vignetting and corresponding to a likelihood specified | |
in the FITS header. The files are gzipped with a .FTZ extension. | |
EEVLIS | Contains calibrated photon event files for the EPIC detectors. If the files are |
sufficiently large they may be separated into two tar files. The files are gzipped | |
fits files with a .FTZ extension. | |
ESKYIM | This group contains the event images in a variety of energy bands. The fits files |
are gzipped with a .FTZ extension, the full images also come as PNG images. | |
ESRLIS | Contains EPIC observation source lists. There is an HTML page of the merged |
source list and gzipped fits tables of source lists from the different instruments | |
and source detection tasks. | |
OM files | |
OIMAGE | Contains OM sky images in gzipped FITS format. |
OMSLIS | Contains OM observation source lists in gzipped FITS format. |
OMSRTS | Contains OM star tracking time series in gzipped FITS format. |
RGS files | |
REVLIS | Contains the RGS source and event lists in gzipped FITS format |
REXPIM | Contains the RGS exposure maps in gzipped FITS format |
RIMAGE | Contains the RGS images (both energy dispersion and cross dispersion) in gzipped |
FITS and PNG formats | |
RSPECT | Contains the RGS source and background spectra in gzipped FITS and PDF formats |