2-1 DMS Requirements Status Daryl Swade DMS Systems Engineer Nov. 6, 2013 S&OC Data Management...

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DMS Requirements Status

Daryl Swade

DMS Systems Engineer

Nov. 6, 2013 S&OC Data Management System Design Review 3

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DMS Requirements Document

Reference: JWST-RQMT-002941/JWST-STScI-002249, SM-05.3

DMS Requirements Document Rev A Official release from SOCCER on January 18, 2013

Updates for Rev B in progress


Requirement type

Number of reqs - baseline

Number of reqs – Rev. A

Number of reqs – Rev. B (pending)

Design constraint 15 15 73

Functional 481 491 498

Interface 50 52 55

Operational 38 38 37

Performance 39 39 39

Security 8 8 8

Testing 1 1 1

632 644 711

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DMS RWG Approved RTCs for Rev B

PR # Title Description

73542 add "when requested" to DAN/ACK requirements

The DMS requirement to send a DAN_ACK for calibrated engineering data should be conditional on the request for an ACK in the DAN.

73989 revisions to Calibration Reference Data Archive requirements

Clarification on “CRDS Web Service” requirement

74001 receive ssr accounting report DMS needs a level 4 FOS-DMS interface requirement to receive the SSR accounting report.

74420 DMS Requirements for NIRSpec Pre-image

NIRSpec scientists have requested that the NIRCam, or other, pre-image used to prepare the target catalog for a NIRSpec MSA observation be included with the proposal and archived with the science data.


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74870 Change DMS-166 verification method from analysis to inspection

As we already have an operational SID system, this requirement can now beverified by inspection rather than analysis.

75403 transfer DMS "Image Statistic Keywords" requirement to WSS

The original motivation for adding these image statistics keywords to the FITS headers was to provide information to the Wavefront Analysis Software (WAS) to support validation of S/N in WFSC data during OTE commissioning. Currently thinking is that the proper way to implement validation of S/N in WFSC data is through an interactive preprocessor tool to augment the WSS instead of in the DMS.

76006 Delete "DMS Lifetime" requirement

DMS-66 is a flow-down from SOC-49, "3.1.1.2.1 S&OC Facilities Lifetime," whichis also to be deleted. Both of these requirements are applicable to the S&OCfacilities plan, not software requirements.


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76007 Add SOC link to DMS "WFS&C Data Processing Rate" requirement

DMS requirement 3.1.2.13 WFS&C Data Processing Rate should link to two SOC parent requirements. In addition to the existing link to: 3.4.5.3.2 Science Data Product Availability for Designated Visits, DMS-462 should also link to 3.1.5.1 WFS&C Data Processing Time.

76009 Add DMS requirements for individual S&OC SI capabilities

There are individual SI capabilities listed in Section 3.1.3 of the S&OC Requirements Document with no flow down to child requirements in DMS. Instead DMS has requirements which point to all SI capability requirements in Section 3.1.3 of the SOC Requirements Document. DMS-192 and DMS-190 need to be expanded into individual requirements for each of the specified SI capabilities.


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Backup Slides


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Requirements Change Process

File JWST-DMS-REQS PR – anyone

Update DOORS and working version of DMS Requirements Document - SysEng

Discuss NOREC PRs – Design group

File Requirements Technical Coordination (RTC) form for each PR that results in requirements change and attach RTC to PR – SysEng

Submit CR to SOCCER for new release of DMS Requirements Document- SysEng

Discuss RTC and agree on details – Design group

Discuss RTC and approve details – DMS RWG


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NIRSpec MSA Requirement Changes


Requirement changes in red text. See JWST-DMS-REQS PR 74420. Verification Method

SDP4.3.1.4 Pre-image DAN TestSDP shall receive electronic notification via a Data Availability Notification from PPS in accordance with the JWST S&OC Subsystems Interface and Control Document (JWST-STScI-000905) when a pre-image file is available for transfer.4.3.1.5 Pre-image ACK TestSDP shall notify PPS via a Data Availability Notification acknowledgement in accordance with the JWST S&OC Subsystems Interface and Control Document (JWST-STScI-000905) when the pre-image file is successfully archived.Association Processing6.3.1.7 Associate Pre-image Data Files TestThe DMS shall associate pre-image files with the corresponding science data on an exposure basis.Data Analysis Tools6.5.3.12 FITSVerify Web Service TestThe DMS shall provide a web service to PPS that will validate the FITS format and keyword content of a pre-image file.Ingest7.1.5.2 Archive Pre-image Data Files TestThe archive shall ingest and store pre-images as received from PPS. [DMS-672]Note: The image file must be supplied by proposer in FITS format, even if the data already exist in the archive.Storage Broker7.1.7.12 Store Pre-image Files On-line InspectionThe storage broker shall store the pre-image file in the on-line cache component of the JWST data archive.Archive User Interface7.1.8.27 Retrieve Pre-image Data Files with Science Data TestThe Archive User Interface shall provide an option to retrieve the associated pre-images with an archive retrieval request for science data.Distribution7.1.9.62 Pre-image File Access TestDistribution shall provide direct access to pre-image files through a web service.7.1.10.24 Pre-image Proprietary Rights TestThe Archive shall enforce proprietary rights on the pre-image data files.Note: PPS will authenticate the proposal system user and pass that information to the archive. The archive will use the passed credentials to verify that the proposal system user is authorized to retrieve the pre-image data files.

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Calibration Data Product Requirement Change Example


Current DMS Requirements 6.2.1.1 Generate Science Data Products 6.4.1.1 Calibration Reference Data GenerationThe DMS shall generate Calibrated Science Data Products from Science Data for all supported modes of the JWST science instruments, as defined in section 3.1.3 of the S&OC Requirements Document (JWST-RQMT-002032, JWST-STScI-000046) under Science Instrument Capabilities. [DMS-192]

The DMS shall generate Calibration Reference Data for use in calibrating Science Data from any of the supported modes of the JWST science instruments, as defined in section 3.1.3 of the S&OC Requirements Document (JWST-RQMT-002032, JWST-STScI-000046) under Science Instrument Capabilities. [DMS-190]

Verification Method Inspection TestRationale for Change There are individual SI capabilities listed in Section 3.1.3 of the S&OC Requirements Document with no flow

down to child requirements in DMS (see JWST-SOC-REQS PR 75545). Instead DMS has requirements which point to all SI capability requirements in Section 3.1.3 of the SOC Requirements Document. DMS-192 and DMS-190 need to be expanded into individual requirements for each of the specified SI capabilities as listed in the table below.

Current S&OC Requirement New DMS Science Data Product Requirement New DMS Calibration Reference Data Requirement3.1.3 Science Instrument Capabilities 6.2.1.1 Generate Science Data Products 6.4.1.1 Calibration Reference Data GenerationThis section defines the high-level science instrument capabilities to be supported by the S&OC. 3.1.3.1 Near Infrared Camera (NIRCam) 3.1.3.1.1 NIRCam Imaging 6.2.1.1.1 6.4.1.1.1

Generate NIRCam Imaging Science Data Products Generate NIRCam Imaging Calibration Reference Data

The S&OC shall support use of the NIRCam for imaging, including synchronous operation of the short- and long-wavelength focal plane arrays in each of the two NIRCam modules. [SOC-2147]

The DMS shall generate Calibrated Science Data Products from NIRCam Imaging observations.

The DMS shall generate Calibration Reference Data for use in calibrating science data from NIRCam Imaging observations.

6.2.1.1.2 6.4.1.1.2Generate NIRCam Grism Science Data Products Generate NIRCam Grism Calibration Reference DataThe DMS shall generate Calibrated Science Data Products from NIRCam Grism observations.

The DMS shall generate Calibration Reference Data for use in calibrating science data from NIRCam Grism observations.

2-1 DMS Requirements Status Daryl Swade DMS Systems Engineer Nov. 6, 2013 S&OC Data Management...

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