Mars 2020 PIXL Release Notes Users are encouraged to provide comments to the PDS Geosciences Node if errors are found either in data or in documentation in this archive. Please send comments by e-mail to: Web: https://pds-geosciences.wustl.edu Email: geosci@wunder.wustl.edu This document, pixl_release_notes.txt, contains release notes and errata concerning the Mars 2020 PIXL archive bundle in the Planetary Data System. It is updated with each release of PIXL data. Section A of this document contains an entry for each PIXL release with general information about the contents of the release, in order from newest to oldest. Updates to previously released files are reported in these entries, along with any known errata. Section B of this file contains general notes and errata, if any, concerning the archive as a whole. ******** SECTION A ******** ------------------------------------------------------------- Release Number: 9 Release Date: 2024-03-29 Data Coverage: 2023-08-31 to 2024-01-01 (Sols 900-1019) New products have been added to these collections: urn:nasa:pds:mars2020_pixl:data_imaging urn:nasa:pds:mars2020_pixl:data_processed urn:nasa:pds:mars2020_pixl:data_raw_ancillary urn:nasa:pds:mars2020_pixl:data_raw_spectroscopy urn:nasa:pds:mars2020_pixl:document Products have been revised in these collections: RDRs for Sols 463, 847, 848, 860, 861, 865, 866, 879, 880, 881, 887, 888, 894, and 895 have been regenerated using the new EDRs delivered with Release 9. Comments and Errata: 1. Calculated X-ray beam locations for the Sol 936 calibration target measurement (PIXL RTT: 327418372) are incorrect for many images collected at high standoff distances. X-ray beam locations for MCC images at PMC 0027, 0028, and 0030 are correct. 2. A solution to the X-ray beam attribution issue described below (Release Number 8: Comments and Errata #2) has been developed and applied to PIXL RXL and RFS RDR data products delivered with PDS Release 9, and will be applied to all RDR files in subsequent PDS releases. The XML label files for the RXL and RFS files have been updated to indicate that the updated Beam Attribution Tool (Version 2.0) was used for the X-ray beam location position calculations for these datasets. A future release will contain re-processed RXL and RFS files generated with the updated beam attribution algorithm for all previous PIXL measurements. ----------------------------------------------------------- Release Number: 8 Release Date: 2023-11-27 Data Coverage: 2023-04-30 to 2023-08-31 (Sols 780-899) New products have been added to these collections: urn:nasa:pds:mars2020_pixl:data_imaging urn:nasa:pds:mars2020_pixl:data_processed urn:nasa:pds:mars2020_pixl:data_raw_ancillary urn:nasa:pds:mars2020_pixl:data_raw_spectroscopy urn:nasa:pds:mars2020_pixl:document Comments and Errata: 1. Calculated X-ray beam locations for the Sol 845/846 calibration target measurement (PIXL RTT: 297075201) are incorrect for many images collected at high standoff distances. X-ray beam locations for MCC images at PMC 0027, 0028, and 0030 are correct. 2. The PIXL team has recently recognized lateral offsets in the attribution of the X-ray beam locations of up to 0.5 mm on the associated MCC images documented in the RXL and RFS files. In addition, the PIXL team has discovered an error in the beam attribution tool that exaggerates the topography of some scans. The exaggerated topography results in beam attributions that distort the scan pattern by increasing the apparent scan line non-linearity. This offset is non-linear, and is most pronounced on higher topographic relief targets. The PIXL team is implementing a solution for these issues and will update the RXL and RFS files in a future PDS release with more accurate X-ray beam location information. 3. A new pseudointensity parameter selection was applied to all data after Sol 817. Pseudointensity channel ranges in RPM files after Sol 817, documented in Table 5 of the SIS, have been updated to the following values: Channel Name Element Channel Range pi1 Na 122-142 pi2 Mg 148-170 pi3 Al 176-200 pi4 Si 207-233 pi5 P 241-268 pi6 S 277-306 pi7 Cl 315-346 pi8 K 400-435 pi9 Ca 446-483 pi10 Ti 547-588 pi11 Ce 588-630 pi12 Cr 658-703 pi13 Mn 718-765 pi14 Fe 780-829 pi15 Ni 913-966 pi16 Ge 1211-1271 pi17 As 1293-1355 pi18 Zn 1057-1113 pi19 Sr 1742-1814 pi20 Y 1840-1914 pi21 Zr 1938-2014 pi22 Ba 542-582 pi23 7/8 N/A pi24 3/9 N/A pi25 3/20 N/A pi26 3/11 N/A pi27 9/13 N/A pi28 8/13 N/A pi29 12/13 N/A pi30 8/18 N/A pi31 8/21 N/A pi32 18/21 N/A ------------------------------------------------------------ Release Number: 7 Release Date: 2023-07-27 Data Coverage: 2022-12-28 to 2023-04-30 (Sols 660-779) New products have been added to these collections: urn:nasa:pds:mars2020_pixl:data_imaging urn:nasa:pds:mars2020_pixl:data_processed urn:nasa:pds:mars2020_pixl:data_raw_ancillary urn:nasa:pds:mars2020_pixl:data_raw_spectroscopy urn:nasa:pds:mars2020_pixl:document Products have been revised in these collections: RDRs for Sol 166/167 have been regenerated using the new Sol 166/167 PIXL EDRs delivered with Release 7. Comments and Errata: 1. The PIXL Sol 776/777 calibration dataset (PIXL RTT: 271057409) is absent from this release. The PIXL RDRs from this dataset were not generated because the MCC SLI Estimate EDR products (ESF product ID) were not generated. We expect the PIXL RDRs from this dataset to be included with PDS Release 8. 2. Calculated X-ray beam locations for the Sol 661 calibration target measurement (PIXL RTT: 230031877) are incorrect for many images collected at high standoff distances. X-ray beam locations for MCC images at PMC 0027, 0028, and 0030 are correct. ------------------------------------------------------------ Release Number: 6 Release Date: 2023-03-24 Data Coverage: 2022-08-27 to 2022-12-27 (Sols 540-659) New products have been added to these collections: urn:nasa:pds:mars2020_pixl:data_imaging urn:nasa:pds:mars2020_pixl:data_oxide_pmc urn:nasa:pds:mars2020_pixl:data_processed urn:nasa:pds:mars2020_pixl:data_raw_ancillary urn:nasa:pds:mars2020_pixl:data_raw_spectroscopy Products have been revised in these collections: Sol 89 products in the data_raw_ancillary collection. Sol 166-167 products in the data_processed collection. Comments and Errata: 1. The PIXL archive contains several hundred products whose label file rover motion counter values for site and drive do not match the site and drive values embedded in the product ID. The filename site/drive values appear to be correct. Affected products are from these collections: * urn:nasa:pds:mars2020_imgops:data_mcc_imgops * urn:nasa:pds:mars2020_pixl:data_raw_ancillary * urn:nasa:pds:mars2020_pixl:data_raw_spectroscopy This error will be corrected in a future release, possibly release 7. 2. Starting with Sol 445, Detector B calibration parameters (offset and xperchan) were incorrectly revised to include digits that are beyond the precision of these measurements. Either set of detector calibration values can be used and are equivalent to within the measurement precision. ------------------------------------------------------------ Release Number: 5 Release Date: 2022-11-21 Data Coverage: 2022-04-26 to 2022-08-26 (Sols 420-539) New products have been added to these collections: urn:nasa:pds:mars2020_pixl:data_imaging urn:nasa:pds:mars2020_pixl:data_oxide_pmc urn:nasa:pds:mars2020_pixl:data_processed urn:nasa:pds:mars2020_pixl:data_raw_ancillary urn:nasa:pds:mars2020_pixl:data_raw_spectroscopy Products have been revised in these collections: None. Comments and Errata: 1. Bulk Sum Quantitative Analysis (product ID: RBQ) files have been added to this release for Sols 0001 - 0539. 2. A new collection has been added: data_oxides_pmc, which has compositional point-by-point results for each detector. See the readme.txt file in the root directory for more details. The products in this collection are also described in an updated version of the pixl_rdr_sis.pdf file located in the document collection. ------------------------------------------------------------ Release Number: 4 Release Date: 2022-07-22 Data Coverage: 2021-12-23 to 2022-04-24 (Sols 300-419) New products have been added to these collections: urn:nasa:pds:mars2020_pixl:data_imaging urn:nasa:pds:mars2020_pixl:data_processed urn:nasa:pds:mars2020_pixl:data_raw_ancillary urn:nasa:pds:mars2020_pixl:data_raw_spectroscopy Products have been revised in these collections: None. Comments and Errata: 1. Calculated X-ray beam locations for the Sol 367 calibration target measurement (PIXL RTT: 130089473) are incorrect for many images collected at high standoff distances. X-ray beam locations for MCC images at PMC 0027, 0029, and 0030 are correct ------------------------------------------------------------ Release Number: 3 Release Date: 2022-03-22 Data Coverage: 2021-08-22 to 2021-12-22 (Sols 180-299) New products have been added to these collections: urn:nasa:pds:mars2020_pixl:data_imaging urn:nasa:pds:mars2020_pixl:data_processed urn:nasa:pds:mars2020_pixl:data_raw_ancillary urn:nasa:pds:mars2020_pixl:data_raw_spectroscopy Products have been revised in these collections: None. Comments and Errata: 1. Sol 167 RFS and RPM data products were omitted in the Release 2 Bundle, and are included in Release 3. ------------------------------------------------------------ Release Number: 2 Release Date: 2021-11-22 Data Coverage: 2021-05-21 to 2021-08-21 (Sols 90-179) New products have been added to these collections: urn:nasa:pds:mars2020_pixl:data_imaging urn:nasa:pds:mars2020_pixl:data_processed urn:nasa:pds:mars2020_pixl:data_raw_ancillary urn:nasa:pds:mars2020_pixl:data_raw_spectroscopy Products have been revised in these collections: None. Comments and errata: None. ------------------------------------------------------------ Release Number: 1 Release Date: 2021-08-20 Data Coverage: 2021-02-18 through 2021-05-20 (Sol 0-89) New products have been added to these collections: urn:nasa:pds:mars2020_pixl:data_imaging urn:nasa:pds:mars2020_pixl:data_processed urn:nasa:pds:mars2020_pixl:data_raw_ancillary urn:nasa:pds:mars2020_pixl:data_raw_spectroscopy urn:nasa:pds:mars2020_pixl:document Products have been revised in these collections: None. Comments and errata: 1. PIXL raw data products generated for sols 0003, 0013, 0014, 0015, 0018, 0028, 0051, 0070, and 0074 are not expected to have corresponding RDR (data_processed collection) products. Data collected on these sols consist of instrument checkouts, imaging only measurements, and X-ray tube conditioning. 2. ESF products from the data_raw_ancillary collection are not included in this release because of a processing issue. They will be added at with later release. 3. In labels for raw data, the product version_id and the Modification_Detail version_id should be the same. In most cases the Modification_Detail version_id is 1.0, even if the product version_id is different. This label error will be corrected in a later release. 4. Labels for raw data include the class Source_Product_Internal, which is inappropriate for raw data. Also, the LIDVID reference may have an incorrect version number, or may not include the complete logical identifier of the source product. These label errors will be corrected in a later release. 5. In the labels for raw spectroscopy products containing spectral data, the spectral channels are described as separate fields. In a later release labels will be revised to describe the spectral channels as a group of related fields for greater usability. ******** SECTION B ******** This section is for general notes and errata, if any. Trapezoidal geometric correction of all PIXL MCC images, along with updated image coordinate positions of these corrected images (included in files with the RXL product ID), will be included in a future PDS bundle release. Effects from pulse pileup and Compton escape in the detectors are included in the calculation column of RBQ files, but are not separated into individual columns. For measurements collected overnight, RDR data products use the Sol and SCLK at the start of the observation in the Sol and SCLK fields of the filename. An exception to this rule is the RCM files, which use the Sol and SCLK of the image acquisition time.