PDS_VERSION_ID = PDS3 RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 80 OBJECT = TEXT INTERCHANGE_FORMAT = ASCII PUBLICATION_DATE = 2002-02-28 NOTE = "N/A" END_OBJECT = TEXT END Mars Global Surveyor Radio Science Team Raw Data Archive Extended Mission Phase (MGS-M-RSS-1-EXT-V1.0) ERRATA.TXT 28 February 2002 R.A. Simpson Stanford University ============================================================================== INTRODUCTION ============================================================================== This file contains an accumulation of corrections and notes for the Mars Global Surveyor Radio Science Team Raw Data Archive - Extended Mission Phase. ============================================================================== CORRECTIONS AND NOTES ============================================================================== MORS_0601 An error in predicting occultation times led to situations in which and spacecraft telemetry modulation was turned on before the ingress MORS_0602 occultation took place (a reconfiguration that usually takes place while the spacecraft is in deep occultation). In other cases not only was the telemetry state changed, but the power amplifier was turned off. Occultations for which the controlling SOE was mm111b.04.tsoe (1035039D.SOE) should be used with caution. For occultation 8574i captured in 10371535.ODR the predicted occultation time was 41 s early; for occultation 8587i (10381705.ODR) the predicted time was 47 s early. For more detail see HEA/HEA1039A.TXT and its two figures on MORS_0602. The following table lists occultations and ODR files known to be corrupted. Note that occultations 8572i and 8573i did not seem to be affected. Occ DSS Start Time ODR ----- ----- ----------------- ------------ 8570i DSS63 2001/037T07:45:26 10370745.ODR 8571i DSS63 2001/037T09:42:00 10370942.ODR 8571i DSS25 2001/037T09:42:00 1037094C.ODR 8574i DSS45 2001/037T15:35:00 10371535.ODR 8575i DSS45 2001/037T17:32:00 10371732.ODR 8576i DSS45 2001/037T19:30:00 10371930.ODR 8582i DSS54 2001/038T07:16:00 10380716.ODR 8583i DSS54 2001/038T09:14:00 10380914.ODR 8584i DSS25 2001/038T11:12:00 10381112.ODR 8585i DSS25 2001/038T13:09:00 10381309.ODR 8586i DSS25 2001/038T15:07:00 10381507.ODR 8587i DSS25 2001/038T17:05:00 10381705.ODR MORS_0601 In AAREADME.TXT, PCKydddA.PCK is incorrectly described as a leap thru second file; it is actuall a planetary constants file. MORS_0656 MORS_0603 Began omitting/removing the following keywords from label files because of inconsistent use within the Project: MISSION_PHASE_TYPE MISSION_PHASE_NAME MORS_0604 Because of a failed software upgrade the "chronological" ordering thru of data on MORS_0604 through MORS_0607 is somewhat out of whack. MORS_0607 ECH, MCH, and ODR data (and their derivatives ECT, MCT, and BRO) were delayed because it was impossible to query for several days. HEA files do not necessarily accompany ECH and MCH data. MORS_0605 Eleven occultations (ODR files) were lost on 2001/048 and 049 because of a subtle scripting error. Details are in HEA1057A.TXT in directory HEA of MORS_0604. MORS_0609 The following files have incorrect PRODUCT_CREATION_TIME values in their labels. The corresponding entries in INDEX/INDEX.TAB and INDEX/CUMINDEX.TAB are also incorrect. The year should be corrected to 2001. ODF/1034034A.ODF ODF/1034034B.ODF MORS_0612 The following files have incorrect PRODUCT_CREATION_TIME values in their labels. The corresponding entries in INDEX/INDEX.TAB and INDEX/CUMINDEX.TAB are also incorrect. The year should be corrected to 2001. ODF/1009009A.ODF ODF/1009009B.ODF ODF/1013013A.ODF ODF/1013013B.ODF ODF/1024024A.ODF ODF/1024024B.ODF ODF/1027027A.ODF ODF/1027027B.ODF ODF/1034034C.ODF ODF/1034034D.ODF MORS_0614 This volume was incorrectly labeled as including data through 2001-04-01. In fact, the last data in the ECH and MCH directories (typically our criterion for labeling) are only from 2001-03-31. MORS_0617 ODR/11040258.ODR was incomplete. The data were recovered and appear on MORS_0621 as ODR/1104025I.ODR. A new BRO file also appears on MORS_0621 under the name BRO/11040258I.PS1. MORS_0617 ECT and MCT for 2001-105 were accidently written to MORS_0617. and They should have appeared on MORS_0618. MORS_0618 MORS_0623 ODR/11320016.ODR has 13 records missing 10-15 seconds before ingress. The missing records were recovered later and a new file (ODR/1132001G.ODR) was written to MORS_0624. The new file has a duplicate record (#429) but it and its companion BRO/1132001G.PS1 should be substituted wherever these data are needed. MORS_0623 Files in the ODR and BRO directories on these two volumes are out and of order. The following ODR files and their labels (and the MORS_0624 corresponding BRO files and labels) are on MORS_0624 but should have been placed on MORS_0623: 11310043.ODR 11310241.ODR 11310834.ODR 11311032.ODR 11311230.ODR 11311427.ODR 11311625.ODR 11311823.ODR 1132001G.ODR The following files (and their labels) in the BRO directory on MORS_0624 should have appeared on MORS_0623: 11330147.PS1 11330345.PS1 11330543.PS1 11330740.PS1 11330938.PS1 11331136.PS1 11331220.PS1 11331334.PS1 11331418.PS1 11331532.PS1 11331616.PS1 11331729.PS1 11331813.PS1 11331927.PS1 MORS_0627 CALIB/TSC00037.LBL has a typo in the first line. The keyword thru should be PDS_VERSION_ID. MORS_0643 MORS_0637 ODR/11891616.ODR is incomplete. The full occultation was captured in ODR/1189161G.ODR on MORS_0638. Same applies to the corresponding files in the BRO directories. MORS_0639 The following files have incorrect PRODUCT_CREATION_TIME values in their labels. The corresponding entries in INDEX/INDEX.TAB and INDEX/CUMINDEX.TAB are also incorrect. The year should be corrected to 2001. ODF/1009009C.ODF ODF/1009009D.ODF ODF/1013013C.ODF ODF/1013013D.ODF ODF/1024024C.ODF ODF/1024024D.ODF ODF/1027027C.ODF ODF/1027027D.ODF ODF/1034034E.ODF ODF/1034034F.ODF MORS_0644 VOLUME_NAME in VOLDESC.CAT incorrectly gives the coverage as extending to 2001-07-31. In fact, the last set of ECH and MCH files is from 2001-07-30. CALIB/TSC00037.LBL and CALIB/TSC00038.LBL have a typo in the first line. The keyword should be PDS_VERSION_ID. MORS_0645 This volume contains DKF files for the first six months of the Extended Mission. DKF files had been defined at the beginning of the mission but were never collected and archived because of a mistaken assumption that they duplicated the contents of SOE files. That was found not to be true in early August, when the backlog of DKF files was captured and saved, beginning with this volume. This volume contains two RSR files, the first of their kind. These two contain data also captured on ODR files (see ODR/11220048.ODR and 11220246.ODR on MORS_0621). ODR/12171046.ODR contains data from a bistatic radar (surface scattering) experiment. The label 12171046.LBL contains a summary of the experiment in the NOTE field. The data in this file were obtained electronically for quick-look analysis. More data will be delivered via tape later. MORS_0651 The RSR directory contains bistatic radar (surface scattering) thru data collected with the Radio Science Receiver. Separate MORS_0653 files were collected for RCP and LCP as follows Volume RCP File LCP File Notes --------- ------------ ------------ ------------------ MORS_0651 12170516.RSR 1217051G.RSR spacecraft two-way MORS_0651 12170659.RSR 1217065J.RSR spacecraft two-way MORS_0652 12170749.RSR 1217074J.RSR noise only MORS_0652 12170839.RSR 1217083J.RSR orbit 10772 MORS_0653 12171036.RSR 1217103G.RSR orbit 10773 MORS_0653 The following files have incorrect PRODUCT_CREATION_TIME values in their labels. The corresponding entries in INDEX/INDEX.TAB and INDEX/CUMINDEX.TAB are also incorrect. The year should be corrected to 2001. ODF/1236236A.ODF ODF/1236236B.ODF MORS_0657 There are 8 files of RSR test data and one file of ODR test data on this volume. All were acquired over the same time period. The file names deviate from the usual naming convention because of the large number of files. The differences among the files are listed below: File Name System Tuning Predicts Sample Rate ------------ ------ --------------- ----------------- 12622335.ODR DSP Radio Science 5000 Real/s 1262233A.RSR RSR Radio Science 1000 I/Q Pairs/s 1262233B.RSR RSR Radio Science 2000 I/Q Pairs/s 1262233C.RSR RSR Radio Science 4000 I/Q Pairs/s 1262233D.RSR RSR Radio Science 8000 I/Q Pairs/s 1262233E.RSR RSR DSN 1000 I/Q Pairs/s 1262233F.RSR RSR DSN 2000 I/Q Pairs/s 1262233G.RSR RSR DSN 4000 I/Q Pairs/s 1262233H.RSR RSR DSN 8000 I/Q Pairs/s The DSP data (12622335.ODR) were collected using 12-bit real samples. The RSR data were supposed to have been collected using 16-bit I and 16-bit Q samples; because of a configuration error, the I and Q samples were actually only 8 bits. MORS_0662 There are 8 files of RSR test data and one file of ODR test data on this volume. All were acquired over the same time period. The file names deviate from the usual naming convention because of the large number of files. The differences among the files are listed below: File Name System Sample Bits Sample Rate ------------ ------ ----------- ----------------- 12841930.ODR DSP 12 5000 Real/s 1284193A.ODR RSR 8 1000 I/Q Pairs 1284193B.ODR RSR 8 2000 I/Q Pairs 1284193C.ODR RSR 8 4000 I/Q Pairs 1284193D.ODR RSR 8 8000 I/Q Pairs 1284193E.ODR RSR 16 1000 I/Q Pairs 1284193F.ODR RSR 16 2000 I/Q Pairs 1284193G.ODR RSR 16 4000 I/Q Pairs 1284193H.ODR RSR 16 8000 I/Q Pairs MORS_0669 There are 8 files of RSR test data and one file of ODR test data and on these volumes. All were acquired over the same time period. MORS_0670 The file names deviate from the usual naming convention because of the large number of files. The differences among the files are listed below: VOLUME_ID File Name System Sample Bits Sample Rate --------- ------------ ------ ----------- ----------------- MORS_0669 13191740.ODR DSP 12 5000 Real/s MORS_0670 1319174A.RSR RSR 8 1000 I/Q Pairs MORS_0670 1319174B.RSR RSR 8 2000 I/Q Pairs MORS_0670 1319174C.RSR RSR 8 4000 I/Q Pairs MORS_0670 1319174D.RSR RSR 8 8000 I/Q Pairs MORS_0670 1319174E.RSR RSR 16 1000 I/Q Pairs MORS_0670 1319174F.RSR RSR 16 2000 I/Q Pairs MORS_0670 1319174G.RSR RSR 16 4000 I/Q Pairs MORS_0670 1319174H.RSR RSR 16 8000 I/Q Pairs MORS_0674 These volumes contain only RSR data -- two files in each RSR and directory, and the corresponding PostScript files in the BRO MORS_0675 directory. The sampling rate was accidently set to 100 ksps for the first three DSN passes on 2001/347, resulting in 50 times more data than expected. Ingress data were collected, but the occultations themselves weren't observed because of the HGA rewind, so no queries were submitted for those data. Two of the remaining DSS 65 egress occultations at 100 ksps were apparently lost when the script was interrupted to reset the sampling rate to 2 ksps. The four RSR files on these two volumes represent the only RSR data that were salvaged from the first 12 observations scheduled. Five later occultations on 2001/347 (including ingress with HGA rewind) were captured at 2 ksps and archived on MORS_0676. MORS_0677 These volumes each contain an RSR file acquired with the erroneous and 100 ksps sampling rate (see erratum for MORS_0674 and MORS_0675). MORS_0678 13471406.RSR (about 340 MB) is on MORS_0677 and 13471604.RSR is on MORS_0678. These are out of sequence because both data files were temporarily lost in the MGS Ground Data System. MORS_0681 Data in the ODF directory are erroneous. Files 1358359A.ODF and 1361359A.ODF were replaced by 1358361A.ODF on MORS_0682. Coverage of ODF/1354358A.ODF was incomplete. A system failure caused loss of all data from 2001/354 and parts of 353 and 355. MORS_0684 An error in file naming resulted in there being RSR files 20010109.RSR and 2001010T.RSR but no 2001010J.RSR. MORS_0674 Accumulated phase in the headers of RSR files is not correct; there thru is a discontinuity at one second boundaries. The error was to be MORS_0686 corrected in the next version of the RSR software (after 2620), but when that was to take place was TBD as MORS_0686 was prepared. MORS_0692 Extra character in line 261 of CATALOG/REF.CAT. thru MORS_0700