PDS_VERSION_ID = PDS3 RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 80 OBJECT = TEXT INTERCHANGE_FORMAT = ASCII PUBLICATION_DATE = 2002-08-05 NOTE = "N/A" END_OBJECT = TEXT END 2001 Mars Odyssey Radio Science Raw Data Archive Mapping Phase (ODY-M-RSS-1-RAW-V1.0) ERRATA.TXT R.A. Simpson Stanford University ============================================================================== INTRODUCTION ============================================================================== This file contains an accumulation of corrections and notes for the 2001 Mars Odyssey Radio Science Raw Data Archive - Mapping Phase. ============================================================================== CORRECTIONS AND NOTES ============================================================================== All CATALOG/TARGET.CAT is provided as a convenience to users. The Volumes values included do not meet any particular acceptance standard, and the file is not updated on any regular schedule. Users needing values to high accuracy/reliability should confirm numbers in TARGET.CAT against another source. TARGET.CAT was not used during the archiving process. CALIB/PCK7323A.TPC is also somewhat out of date. New constants were adopted by the IAU in 2000, but a new PCK file has not been created by NAIF. ODRS_0001 This volume was incorrectly labeled ODY_0001 when mastered. A new version (ODRS_0001;2) was created on which this error and several of the others noted here were corrected. Note that ODRS_0001;2 will have INDEX, AAREADME.TXT, and ERRATA.TXT files which cover more than the first volume. ODRS_0001 AAREADME.TXT is not clear regarding the coverage of this data set. thru Data were collected starting about 2002-01-01, during the final ODRS_0004 stages of ODY aerobraking. The Mapping Phase of the mission began in mid February 2002. So the majority of data are from Mapping, but a few of the early files cover Aerobraking. Corrected on ODRS_0001;2. Lines in CALIB/PCK7323A.TPC are delimited by two ASCII carriage returns and an ASCII line feed. The extra carriage return was removed starting with volume ODRS_0005. Corrected on ODRS_0001;2. ODRS_0001 DATA_SET_NAME in CATALOG/DATASET.CAT is incorrect. It should be thru "2001 MARS ODYSSEY RADIO SCIENCE RAW DATA SET - V1.0" ODRS_0006 ODRS_0003 This is the first volume containing TDF files. The first file in this set was mistakenly named 2037039B.TDF because a test entry had not been removed from the data base. There is no 2037039A.TDF The two RSR files on this volume cover deployment of the high-gain antenna. 2037030A.RSR data were collected at DSS 14 using a 2 ksps sampling rate with 16-bit I and 16-bit Q samples. The same parameters were used at DSS 43 for 2037030B.RSR. For unknown reasons, the DSS 43 data have significantly higher signal-to-noise ratio. Data were also collected at 16 ksps; see ODRS_0005 and later volumes for those files. ODRS_0005 These RSR files were collected at DSS 14 using 16 ksps 16-bit I/Q samples and cover deployment of the high-gain antenna. There is a gap of 27 minutes 31 seconds between 2037030C.RSR and 20370413.RSR. Reason for the gap is unknown, but it was repeated on several queries spaced over several days. Before the data could be returned from the station via ftp, RSR engineers erased it. 16 ksps data were collected at DSS 43 (see 2037030D.RSR and 20370430.RSR on later volumes) with no gap; 2 ksps data were collected at both stations (see 2037030A.RSR and 2037030B.RSR on ODRS_0003). The lower right panel in BRO/2037030C.PS1 shows 20370305.RSR as the source file for these plots. The correct source file is 2037030C.RSR. ODRS_0006 The FILE_NAME keyword was omitted from PDS labels in the SPK directory. This was corrected in Version 2 of the CD. On Version 2 of this CD, files describing the new SFF data type were included even though no SFF data is on the CD. The fact that SFF_SIS.TXT appears in the DOCUMENT directory was not mentioned in DOCINFO.TXT. ODRS_0007 First volume with Small Forces Files (SFFs). SFF files contain information on spacecraft thruster activity. During the MGS mission, thruster activity was included in Angular Momentum Desaturation files (AMD directory). AMD files are not being generated for the ODY mission, so the SFF data type is being substituted. SFFs are described by SFF_SIS.TXT in the DOCUMENT directory. The first SFF file (SFF/2011016A.SFF) is a PDS TABLE object, described by its label. Each line in the table summarizes thruster activity for a single event. All other SFF files are text files covering 24-hour periods; they are described by SFF_SIS.TXT in the DOCUMENT directory. Beginning with this volume, the INDEX.TAB and CUMINDEX.TAB files in the INDEX directory include new columns for PRODUCT_TYPE, RELEASE_ID, and RELEASE_DATE. In general, the RELEASE_DATE for the current release will be set to 0000-00-00; the real date will be substituted later to reflect when the volume actually went on-line at the PDS Geoscience web site. ODRS_0008 On two days, no SFF data could be found on the query server; so the following files in the SFF directory do not exist: 2153153A.SFF 2170170A.SFF ODRS_0009 In the ION directory, file 2182213B.ION was created after both 2182213C.ION or 2182213D.ION and may contain better data.