Directory structure has changed. Naming convention for processed science frames has changed.

Association report available

The top-level structure of the package for your FORS1 run is as follows:

For each observation block (OB) that has been executed on Paranal, you find all measured raw data (FITS files) in a directory named by the OB number (FITS key OBS.ID). If pipeline products exist, these are also added within the OB directory. The OB package structure is hoped to be more user-oriented than the previously used DATE structure.

The GEN_CALIB directory collects all calibration files (raw and products) that have been measured as part of the regular calibration plan, and calibration frames of a general nature (like static line tables). The GEN_INFO directory has general information.

The tree shown above is the logical structure, which means that this is the way the data have been organized before they have been put onto media. Depending on the size of your package, the directories may be distributed across several media. It is a good idea to create the original tree on your local disk and then copy all files from the media into this tree.

<OBS_ID> (e.g. 179211)

For each executed observation block of your run, a directory containing all measured data is created. All data under <OBS_ID> carry your run ID.

Note that some of your OBs may have been executed more than once. In particular, if time permitted, we tried to re-execute OBs which produced data clearly out of the specified constraints. Check out the NIGHTLOG.html file for details (go to "OB information"). All data from OBs that have been executed multiple times are found in the same directory.

Each OB directory is divided into subdirectories for science frames, calibration frames, and log files. In many cases, there will be science data only, but there may also be OBs with attached calibration data:

<OBS_ID>

sci_raw sci_proc cal_raw cal_proc logs

<OBS_ID>/sci_raw

All raw science frames (DPR.CATG=SCIENCE) from the OB are contained in this directory. Find a description of raw FORS1 science data here.

<OBS_ID>/sci_proc

Here you find the processed science data. Note that not all setups are presently pipeline-supported. Find a description of processed FORS1 science data here

All reduced SCIENCE data are renamed. The renaming scheme can be found here.

<OBS_ID>/cal_raw

If measured, raw calibration frames (DPR.CATG=CALIB) produced by the OB are contained in this directory (not the ones from the calibration plan!).

Calibrations measured as part of the regular calibration plan are stored under the GEN_CALIB directory. Find a description of FORS1 raw calibration data here.

<OBS_ID>/cal_proc

The pipeline products of the raw attached calibrations are delivered here. Find a description of FORS1 product calibration data here. The CALIB products are renamed. The renaming scheme can be found here.

<OBS_ID>/logs

This directory has logging information about processing and packing of your data:

• Association Blocks (extension .ab)
• logs of the pipeline processing (extension .rblog)

Association Blocks (ABs) are ASCII files which contain all the information required to pipeline-process and pack data. This information includes the reduction recipe, the input raw file(s), the calibration products needed for processing, and the names of the final products. ABs provide the logical link between raw files, product files, and associated calibration files. They are described here.

The pipeline processing log is a record of the science reduction process, with a detailed log of reduction steps, results etc.

GEN_CALIB

This directory collects all calibration frames that are associated to your science data, and that have been measured as part of the regular calibration plan. It also contains their pipeline products and calibration frames of a general nature (like static line tables). Calibrations that have been measured by user-defined OBs and that have been used for pipeline processing of science data may be included here in addition. The directory has three subdirectories, two of which have further fine-structure:

GEN_CALIB
raw	proc	gen
BIAS FLAT LAMP STD	BIAS FLAT LAMP STD

GEN_CALIB/raw

Raw calibration files. Find a description of FORS1 raw calibration data here.

GEN_CALIB/proc

Calibration products derived from the raw calibrations. Find a description of FORS1 product calibration data here. The CALIB products are renamed. The renaming scheme can be found here.

GEN_CALIB/gen

General calibration data of static nature.

Additional or missing raw calibration files may be retrieved anytime from the ESO Archive.

Calibration data are public while SCIENCE data have a proprietary period of one year.

GEN_INFO

This directory hosts some general information which is described under list files. It has the following subdirectories:

DIRECTORY	CONTENT
ObservingReports	nightlogs, OB report (HTML files)
scripts	executable scripts (presently one: print_all_reports)