Introduction

This is the second deletion round and supports the Data Retention Policy/Procedure in ensuring capacity is available for new observations by removing the oldest, and/or least valuable data in the archive.

Prepare wiki pages containing details and summaries of data which is proposed for deletion: 15-Nov-2024

Deletion announcement sent to MWA members via email and four week consultation period start: ??-Nov-2024

Four week consultation period end: ?? December 2024 at 23:59 AWST

Sign off: TBA

Commence deletion: TBA

Deletion complete: TBA

Please use this four week consultation period to carefully review the above information. If you would like some or all the data for a delete request retained, as per the policy/procedure, please prepare a submission in writing to the MWA Director before the end of the consultation period and include:

the dataset in question;
the reason(s) for temporary retention of the dataset- for example, the significance of the dataset, the data retention requirements of the researcher’s institute, and the proposed plan for copying and storing the dataset offsite.
total size of the dataset to be retained

The MWA Director (or delegate) will then assess the request for retention and will respond in writing. Please note that any of the data approved for retention will not be deleted this round.

If you have any questions about the data nominated for deletion or this process, please reach out to the Principal Scientists.

Summary of Proposed Deletions by Delete Request

delete_request_id	created / requested by	Request Created	request name	data volume (TB)	observations	Full or Partial delete	comment

delete_request_id	created / requested by	Request Created	request name	data volume (TB)	observations	Full or Partial delete	comment
TOTAL (27 delete requests)				2,490	30,068	Mixed
Delete Request 38	Ramesh Bhat	3/10/2023	Bad G0097 observation - clock issues	96	1	Full	Request Created: RRI clocks not in sync, deletion authorised by R Bhat in email to AW on 2023-10-03
Delete Request 39	Bradley Meyers	28/11/2023	Unusable SMART O11 observation, re-observed on July 14	85	1	Full	Request Created: Confirmed by email from B.Meyers to AW on 2023/10/23
Delete Request 40	Natasha Hurley-Walker	11/12/2023	D0044 observations mistakenly scheduled in VCS mode	86	12	Full	Request Created: Confirmed in email from NHW to AW on 2023-12-01
Delete Request 41	Sam McSweeney	12/01/2024	Delete Sam McSweeney's lightning observations for G0081	119	24	Full	Request Created: As confirmed in email from PI on 2023/12/08
Delete Request 43	Gemma Anderson	24/04/2024	G0094 GRB VO trigger false events	57	6	Full	Unneeded buffer dump data
Delete Request 44	Greg Sleap	25/06/2024	Observations which are NO_CAPTURE but have data files in D0004	8	4	Full	Request Created: Unlikely to be useful data
Delete Request 45	Nick Seymour	25/06/2024	D0000 DDT observations for 2022_TC4-poor tile health	10	316	Full	Request Created: Requested by Nick Seymour
Delete Request 46	Greg Sleap	25/06/2024	Legacy VCS observations with test in the observation name	304	129	Full	Request Created: Low value data with very few downloads
Delete Request 47	Gemma Anderson	25/06/2024	LVC_S240623 buffer and VCS trigger data	5	2	Partial-only buffer files to be deleted	Request Created: Event retracted, as per email from Gemma Anderson on 2024-06-24
Delete Request 48	Gemma Anderson	25/06/2024	LVC_S240623 buffer and VCS trigger data	4	1	Partial-only buffer files to be deleted	Request Created: Event retracted, as per email from Gemma Anderson on 2024-06-24
Delete Request 49	Natasha Hurley-Walker	12/07/2024	Corrupted fringe-stopping observations for Natasha Hurley-Walker	5	83	Full	Request Created: As per email from PI on G0080 and D0042, on 2024-07-12
Delete Request 50	John Morgan	15/07/2024	Corrupted fringe-stopping observations for John Morgan	4	64	Full	Request Created: As per email from PI on G0060, on 2024-07-12
Delete Request 51	Natasha Hurley-Walker	14/08/2024	D0044 - Follow-up of Galactic radio transients: low value data- non-detections of transients	26	173	Full	Request Created: Requested to be deleted by the PI (Hurley-Walker)
Delete Request 52	Natasha Hurley-Walker	14/08/2024	G0092 - Monitoring a long-period radio transient: low value MWAX VCS data- non-detections of transient	285	40	Full	Request Created: Requested to be deleted by the PI (Hurley-Walker)
Delete Request 53	Ramesh Bhat	2/09/2024	D0049 - New MWA pulsar discovery timing: pulsar followup observation	57	1	Full	Request Created: Delete as per email from Ramesh Bhat on 2024-08-27
Delete Request 54	Gemma Anderson	4/09/2024	Invalid SWIFT trigger pushed during software testing	14	1	Full	Request Created: As per email from Gemma Anderson on 2024-09-04
Delete Request 56	Gemma Anderson	3/10/2024	Un-needed trigger observations	76	10	Full	Request Created: G0055 and G0094 triggers, deleted as per email from Gemma Anderson on 2024-09-18
Delete Request 57	Greg Sleap	8/10/2024	32T and commissioning observations	148	11165	Full	Request Created: All 32T and observations prior to science operations starting in 1-Jul-2013
Delete Request 58	Greg Sleap	8/10/2024	Partial delete of incomplete recombined Legacy VCS tar files	105	10	Partial-removal of redundant tar files	Request Created: These observations were only partially recombined- we will remove the partial tar files.
Delete Request 59	Greg Sleap	8/10/2024	Partial delete of incomplete recombined Legacy VCS ics files	0.5	10	Partial-removal of redundant ics files	Request Created: These observations were only partially recombined- we will remove the partial ics files.
Delete Request 60	Greg Sleap	8/10/2024	Partial delete of recombined Legacy VCS observations redundant raw files	77	12	Partial-removal of redundant raw files	Request Created: These observations were recombined so redundant raw data can be removed
Delete Request 61	Stefan Duchesne	14/10/2024	D0000 - Unspecified Director's time: Phase I (no confirmed downloads)	401	11892	Full	Request Created: Phase I DDT observations with no confirmed downloads logged
Delete Request 62	Stefan Duchesne	14/10/2024	D0000 - Unspecified Director's time: Phase I (at least one confirmed download)	107	3992	Full	Request Created: Phase I DDT observations with at least one confirmed download logged
Delete Request 63	Ramesh Bhat	1/11/2024	D0049 - New MWA pulsar discovery timing: VCS obs	57	1	Full	Request Created: Insufficient sensitivity, deleted as per email from PI on 2024-10-31
Delete Request 64	Devojyoti Kansabanik	7/11/2024	G0108 - CME magnetic fields: bad observations from 2024A	8	81	Full	Request Created: Deleted as per email from PI on 2024-11-06
Delete Request 65	Chris Riseley	15/11/2024	Phase I less than 50% good tiles	160	1978	Full	Request Created: Phase I observations with less than or equal to 50% good tiles
Delete Request 67	Divya Oberoi	20/11/2024	Unwanted G0002 and G0102 buffer trigger voltage files from 2024A	183	59	Partial- only buffer files to be deleted	Request Created: As per email from Divya Oberoi on 2023/11/14

Delete Request Summary by Project

projectid	description	full_partial	obsids	min_obsid	max_obsid	in_deletion_requests

projectid	description	full_partial	obsids	min_obsid	max_obsid	in_deletion_requests
C001	Default	Full	271	1028454352	1377386760	43,46,56,57,65
C100	Short (~2min) scans on strong calibrator sources. Freq: 80-250 MHz. LST range: all. Subarrays: all	Full	487	1028713936	1057207704	57,65
C101	The Southern Continuum Interferometric Snapshot Survey Of the Radio Sky. Freq: 104-195 MHz. LST range: sunset to sunrise. Subarrays: all.	Full	1722	1031652496	1038440376	57
C102	Night-time drift scans at zenith (DEC -27). Freq: 104-195 MHz. LST range: sunset to sunrise. Subarrays: all.	Full	3285	1031608768	1055715616	57
C103	Night-time drift scans at DEC -47, az=180. Freq: 104-195 MHz. LST range: sunset to sunrise. Subarrays: all.	Full	949	1031867928	1039896616	57
C104	http://mwa-lfd.haystack.mit.edu/twiki/pub/Main/Commissioning/EoR_commissioning_plan_July2012.pdf	Full	1059	1032084248	1040231528	57
C106	Tracking observations of the Sun, often from rise to set. Freq: 80-230 MHz, 270-300 MHz. Subarrays: all.	Full	1617	1032134416	1052803816	57
C110	Moon imaging and RFI	Full	126	1032609736	1051567816	57
C111	LMC	Full	50	1035989472	1035996136	57
C112	W44 Galactic plane field. Freq: 80-230 MHz	Full	207	1032083952	1055270296	57
C113	Galactic micro-quasar. Freq 80-230 MHz. Available Aug/Sept. *Note within C112 field.	Full	69	1034331616	1052769976	57
C117	Test object for high-z HI absorption	Full	120	1037734096	1039213216	57
C118	Freq: 80-230 MHz	Full	238	1034526192	1052752032	57
C119	Freq: FM band, central chan 81.	Full	8	1037967616	1055671576	57
C120	Fixed DEC scan at DEC -6 (corresponding to a sweet spot pointing)	Full	1027	1038913936	1041283352	57
C121	Monitoring of variable sources in GC.	Full	24	1051554792	1051561696	57
C122	A3376 (RA 6, DEC -40), A3667 (RA 5:49, DEC -24:28) and the Bullet Cluster (RA 7, DEC -56)	Full	37	1052732416	1055272216	57
C123	Test observations where the data will be analysed on site, not archived to Pawsey.	Full	1	1398402200	1398402200	56
D0000	Catch-all for Director's time observations that don't have a project ID.	Full	16202	1057583712	1226995216	45,46,61,62
D0002	Test observations for non-standard correlator modes using high time and/or frequency resolution.	Full	1	1108883600	1108883600	65
D0004	Director's time allocated to testing the voltage capture system.	Full	4	1063026824	1064089696	44
D0004	Director's time allocated to testing the voltage capture system.	PARTIAL	2	1095506112	1095506112	58,59
D0005	Tests of the prototype AAVS0.5 tile.	Full	7	1073315112	1074328032	65
D0006	Instrument stability and calibration tests.	PARTIAL	1	1403218160	1403218160	48
D0008	Observations of the GAMA fields at 300 MHz	Full	93	1110218120	1127921640	65
D0011	Interplanetary Scintillation observations.	Full	13	1134865688	1146530504	65
D0012	P.I. Tingay	Full	53	1130761056	1137926872	65
D0020	(P.I. Brendan Henessey) VCS observations for Space Situational Awareness	PARTIAL	1	1226689160	1226689160	60
D0029	(P.I. Ramesh Bhat) Timing and imaging follow-up of the first pulsar discovery from the MWA	PARTIAL	2	1275177136	1275177136	58,59
D0042	(P.I. Natasha Hurley-Walker) Followup of a long-period transient	Full	2	1404574936	1404659936	49
D0044	(P.I. Natasha Hurley-Walker) Follow-up observations of some Galactic radio transients	Full	185	1382552600	1393454560	40,51
D0049	(P.I. Bhat, Ramesh) Timing observations of a new pulsar discovery from the SMART survey	Full	2	1407613096	1410025688	53,63
G0001	(Bell) The MWA long-term radio sky monitor	Full	17	1063380536	1151441160	65
G0002	(Cairns) Unbiased Solar Observations for Burst, Calibration, and Quiet Sun Studies	Full	805	1062387616	1132556248	65
G0002	(Cairns) Unbiased Solar Observations for Burst, Calibration, and Quiet Sun Studies	PARTIAL	54	1403748584	1414825832	67
G0008	(Staveley-Smith) A Galactic and Extragalactic All-Sky MWA Survey	Full	67	1122925144	1153766424	65
G0009	(Webster) Epoch of Reionisation	Full	257	1063726576	1147170480	65
G0012	(Johnston-Hollitt) The Horologium-Reticulum supercluster as a cosmic laboratory to investigate the role of environment on the radio source population.	Full	1	1076498536	1076498536	65
G0017	(McKinley) Using the Moon to detect the global EoR signal.	Full	541	1109686176	1130161840	65
G0021	P.I. Bhat	Full	2	1109156704	1109159016	65
G0021	P.I. Bhat	PARTIAL	4	1276887736	1283267840	58,59
G0023	P.I. Tingay	Full	1	1111654960	1111654960	65
G0026	Detection of HI Absorption toward a z~5.3 Radio-loud QSO	Full	1	1137182984	1137182984	65
G0034	P.I. Ramesh Bhat	Full	117	1240826896	1303072888	46
G0055	(P.I. Gemma Anderson) Proposal for MWA rapid-response observations of GRBs	Full	2	1402040256	1409382560	54,56
G0055	(P.I. Gemma Anderson) Proposal for MWA rapid-response observations of GRBs	PARTIAL	8	1266135128	1273676948	58,59,60
G0057	(P.I. Ramesh Bhat) Southern-sky MWA Rapid Two-metre (SMART) pulsar survey	Full	1	1372266912	1372266912	39
G0060	(P.I. John Morgan) An Interplanetary Scintillation Survey with the extended Phase II MWA	Full	64	1404532200	1404701160	50
G0068	(P.I. Charlotte Sobey) Targeted pulsar search towards promising candidates identified in radio surveys	PARTIAL	13	1271538166	1283453256	58,59,60
G0071	(P.I. Parul Janagal) Investigation of sub-pulse drifting properties for three pulsars	PARTIAL	2	1275751816	1275751816	58,59
G0080	(P.I. Natasha Hurley-Walker) Monitoring the Galactic Plane for minute-timescale radio transients	Full	81	1404555536	1404582952	49
G0081	(P.I. S. J. McSweeney) Pilot study to image lightning in high time and spatial resolution.	Full	24	1348452744	1348479080	41
G0092	(P.I. N. Hurley-Walker) Timing and spectropolarimetric observations of a long-period radio transient. Continues D0038.	Full	40	1378118832	1382958304	52
G0094	(P.I. G. Anderson) Rapid-response triggering on O4 gravitational wave events with the Murchison Widefield Array	Full	12	1377404592	1403219992	43,56
G0094	(P.I. G. Anderson) Rapid-response triggering on O4 gravitational wave events with the Murchison Widefield Array	PARTIAL	2	1403219968	1403219992	47
G0097	(P.I. Cordes, James) Measuring the pulse broadening times of PSR J1935+1616 at low radio frequencies	Full	1	1380278096	1380278096	38
G0102	(P.I. Mondal, Surajit) Coordinated Solar and Heliospheric Observing Campaign using the MWA with Parker Solar Probe and Solar Orbiter	PARTIAL	5	1403752520	1404018920	67
G0108	(P.I. Kansabanik, Devojyoti) Measurement of CME magnetic fields in the heliosphere using Faraday Rotation observations.	Full	81	1402091384	1412339936	64

MWA Telescope

Deletion Round 2024-12

Introduction

Summary of Proposed Deletions by Delete Request

Delete Request Summary by Project

Delete Request Details