PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM OBJECT = TEXT NOTE = "Overview of the contents and organization of the volume" PUBLICATION_DATE = 2020-01-08 END_OBJECT = TEXT END CHANDRAYAAN-1 SIR2 archive Bjoern Grieger 2020-01-08 Contents 1 Introduction 2 Volume format 3 File format 4 Volume contents 5 Whom to contact for information 1. Introduction This volume contains the RAW data of the SIR2 instrument from the NOR- MAL PHASE OPERATIONS of the CHANDRAYAAN-1 mission. RAW data means level 2 data on the CODMAC scale, i.e. edited data corrected for telemetry errors, also referred to as Experimental Data Record (EDR). Each SIR2 product contains all spectra of one orbit. The SIR2 products on this volume are the exact products released by the CHANDRAYAAN-1 project. Supporting documentation and file labels conform to the Planetary Data System Standards, Version 3.7, Jet Propulsion Laboratory (JPL) document JPL D-7669. Information about the CHANDRAYAAN-1 mission, the SIR2 instrument, and this dataset can be found in the `CATALOG' and `DOCUMENT' directo- ries. Information on the pointing accuracy can in particular be found in the `DATASET.CAT' in the `CATALOG' directory. Additional informa- tion about the SIR2 instrument, including the acquisition, processing, and quality of the SIR2 data can be obtained from Dr. Urs Mall Max Planck Institute for Solar System Research Max-Planck-Str. 2 37191 Katlenburg-Lindau Germany Tel: +49 5556 979-152 Email: mall@mps.mpg.de http://www.mps.mpg.de 2. Volume format The volume is made available online by the Indian Space Research Organisation (ISRO) and by the European Space Agency (ESA). ESA pub- lishes the data via the Planetary Science Archive (PSA) on the world wide web at http://www.rssd.esa.int/psa 3. File format The data is separated into files by orbit. There are two types of files: * Science data products comprising the actual spectral data accompa- nied by the respective housekeeping parameters, marked by the let- ters `_SC_' in the filename. * Housekeeping data products comprising only housekeeping parameters of the intrument, marked by the letters `_HK_' in the filename. There is only one such data product which stems from the commis- sioning phase. Each data product consists of two files: * An ASCII label file containing a PDS conforming description of the table format in which the data are provided and * a file containing the actual data. This file has also a FITS header which makes it a legal FITS file. It is a binary file for a science data product and an ASCII file for a housekeeping data product. Some more details on the file format are given in `DATASET.CAT'. A comprehensive description of the PDS labels is provided in the EAICD in the `DOCUMENT' directory. 4. Volume contents The files in this volume are organized in one top-level directory with several subdirectories. The following table shows the structure and contents of these directories. In the table, directory names are enclosed in square brackets ([]). Upper case letters indicate an actual directory or file name while lower case letters indicate place- holders illustrating the general form of a directory or file name. [CH1ORB-L-SIR2-2-NPO-V1.0] | |- AAREADME.TXT Overview of the contents and | organization of the volume | |- VOLDESC.CAT The file containing a description of | the VOLUME object | |- [CATALOG] A directory containing top level | | information about the SIR2 dataset in | | a set of ASCII files | | | |- CATINFO.TXT Description of files in the CATALOG | | directory | | | |- DATASET.CAT ASCII file providing information | | about this dataset | | | |- INST.CAT ASCII file providing information | | about the SIR2 instrument | | | |- INSTHOST.CAT ASCII file providing information | | about the CHANDRAYAAN-1 spacecraft | | | |- MISSION.CAT ASCII file providing information | | about the CHANDRAYAAN-1 mission | | | |- PERSON.CAT ASCII file providing information | | about SIR2 personnel | | | |- REF.CAT ASCII file providing | | SIR2 references | | | |- SOFT.CAT This is a dummy software catalog | | which is required by the PDS standard | | although no software directory is | | present in this dataset. | |- [DATA] The directory containing the actual | | SIR2 data products, organized in | | subdirectories | | | |- [ORBIT_mmmmm_TO_nnnnn] The subdirectory containing the data | | | products from orbit number mmmmm to | | | orbit number nnnnn | | | | | |- CH1SIR2_NE2_tt_Rnnnnn.FIT | | | Data of type tt (either SC for science | | | data including housekeeping data | | | or HK for housekeeping data only, in | | | binary or ASCII format, respectively) | | | taken in orbit nnnnn | | | | | |- CH1SIR2_NE2_tt_Rnnnnn.LBL | | | PDS label file of the respective FITS | | | file | |- [DOCUMENT] A directory containing documents | | providing information about the | | SIR2 dataset | | | |- ALIGNMENT.PDF Assessment of the alignment of the | | SIR2 instrument | | | |- CLEMENTINE_OFFSET.PDF This report addresses considerable | | offsets which have been reported to | | occur between AMIE images projected | | onto the Moon's surface and the | | Clementine basemap. | | | |- DATA_HANDLING.PDF Description of the content and | | format of the SIR2 telemetry data | | | |- DOCINFO.TXT Description of files in the DOCUMENT | | directory | | | |- EAICD.DOC Experiment to Archive Interface | | Control Document, describing how the | | data from the experiment is organized | | in this archive | | | |- GEOMETRY_INDEX.PDF Description of the concept and the | | format of the GEO_MOON_INDEX_TABLE | | provided in the INDEX directory | | | |- OTHERDOCS.LBL PDS label file for all documents | | in this directory without | | individual label file | | | |- USER_MANUAL.PDF Description of the SIR2 instrument, | | its interfaces, handling, and | | operations | |- [INDEX] This directory contains the indices | | for all data products in the volume | | | |- GEO_MOON.LBL Detached PDS label file for the | | table file GEO_MOON.TAB. The table | | provides various geometrical parameters | | for a sample set of all measurements. | | The sample set does reasonably encompass | | the footprints of the complete set of | | all measurements, cf. the GEOMETRY_INDEX | | document in the DOCUMENT directory. | | | |- GEO_MOON.TAB ASCII table file with one row for | | each measurement of a sample set of | | all measurements. The format and | | content of each column is described | | in the PDS label file GEO_MOON.LBL. | | | |- INDEX.LBL Detached PDS label file for the | | table file INDEX.TAB. The table | | provides a complete listing of all | | data products in the dataset. | | | |- INDEX.TAB Table file with one row for each | | data product. The format and content | | of each column is described in the | | PDS label file INDEX.LBL. | | | |- INDXINFO.TXT Description of files in the INDEX | | directory 5. Whom to contact for information For information on this dataset, contact Bjoern Grieger ESAC Camino Bajo del Castillo s/n Urb. Villafranca del Castillo E-28692 Villanueva de la Canada Madrid Spain Tel: +34 91 81 31 107 Email: bjoern.grieger@esa.int http://www.esa.int