Summary of MD.GR0

Summary page of information for the MD GR0 (grand reprocessing version 0) including the new reference stack in the V3 tessellation with the start of new observations of MD10 in OC142. This is version 0 as the test start of full reprocessing of the MD fields to be balanced along with 3PI stacks and nightly science, generation of new reference stacks and not yet including a revised reference catalog (currently for MD10, 01, 02).

MD.V3 Tessellation

The new V3 tessellations are defined at PS1_Tessellations with the following properties:

• 0.25"/pix (previously 0.2"/pix up through V2, and from natural ~0.258"/pixel)
• 10 x 10 skycell grid (previously 12 x 12)
• +x is West (flipped from before +x was East), +y is still North
• 320 pixel (80") overlap (from 300 pixels, 60", in V2)
• revised centers if necessary -- was necessary for MD10 (will be for MD07)

MD10.GR0

Started for OC142 (July 15, 2011) with a new reference stack and full sample of reprocessed exposures as an initial reprocessing version.

• z,y-band data processed prior to full Dark model improvements (higher background makes effect insignificant). gri-band processed after Dark model improvements.

• same photometry reference catalog as before

• ...

• stack-stack diffims still using forced convolution of reference stack to input images

• ...

MD10.V3 reference stack

Initially ran without reduction type and ran sample of best PSF and test deep stack.

After discovery of this error, re-ran as DEEP_STACK reduction type.

Reduction type description: NULL (none/default):

DEEP_STACK:

PS1_REFSTACK:

THREEPI_STACK:

NIGHTLY_STACK:

version

FWHM (major)

• FWHM mean,histograms vs V2
• Mask fractions vs V2
• photometry vs V2
• reference stack vs typical nightly stack skycell comparison

MD10.GR0 reprocessed exposures

The full set of exposures from April 2009 were run.

Distribution

• ps1-md-GR (full): warp, nightly stack, warp-stack and stack-stack diffims
• ps1-md-GR-cat (cleaned): camera, warp-stack and stack-stack diffims

NOTE: full chip and camera products will not be included as datastore release bundles unless there is interest

Cleanup time-scale TBD see below

Data bundles will unpack in the following ways warp-stack diffims: all under gpc1/MD10.GR0/2011/08/09/MD!0.V3/skycell.NNN -- very large directory

Postage-stamp Server

Access to be tested still.

Missing/Failed Data

Summary of any failed data products during processing.

• two skycell.021(and?) failed to produce a nightly stack (date?)

Cleanup Cycle

IPP:

stage	time
chip	ASAP
camera
warps	(V0-V2)
stacks	like (V0-V2) after JT has sync'd remaining ones?
WSdiff	must wait for MOPS postage stamp requests to finish
SSdiff
refstack	not cleaned

Datastore:

stage	time
chips	none distributed
camera	none distributed
warps
stacks
WSdiff
SSdiff
refstack

MD01.GR0

Started for OC143 (August 13, 2011) with a new reference stack and small sample of reprocessed exposures released as nightly stacks.

MD01.V3 reference stack

• label: MD01.refstack.20110820
• data_group: MD01.refstack.20110820

version	filter	ave. input warps	FWHM (major)
MD01.refstack.20110820 V3	y	x	0.84"
MD01.refstack.20100812 V2	y	x	1.04"
MD01.refstack.20110820 V3	z	x	0.87"
MD01.refstack.20100812 V2	z	x	1.12"
MD01.refstack.20110820 V3	i	x	1.00"
MD01.refstack.20100812 V2	i	x	1.13"
MD01.refstack.20110820 V3	r	x	1.10"
MD01.refstack.20100812 V2	r	x	1.24"
MD01.refstack.20110820 V3	g	x	1.20"
MD01.refstack.20100812 V2	g	x	1.24"

MD01.GR0 reprocessed sample

• label: MD01.GR0
• data_group: MD01.GR0.20110812 = y
• data_group: MD01.GR0.20110815 = z
• data_group: MD01.GR0.20110816 = i
• data_group: MD01.GR0.20110817 = r
• data_group: MD01.GR0.20110818 = g
• dist_group: MD02.GR

MD02.GR0

Started for OC144 (September 12, 2011) with a new reference stack and a small sample of reprocessed exposures released as nightly stacks.

MD02.V3 reference stack

• label: MD02.refstack.20110907
• data_group: MD02.refstack.20110907

version	filter	ave. input warps	FWHM (major)
MD02.refstack.20110907 V3	y	x	1.01"
MD02.refstack.20101126 V2	y	x	1.02"
MD02.refstack.20110907 V3	z	x	0.90"
MD02.refstack.20101126 V2	z	x	1.03"
MD02.refstack.20110907 V3	i	x	1.00"
MD02.refstack.20101126 V2	i	x	1.16"
MD02.refstack.20110907 V3	r	x	1.15"
MD02.refstack.20101126 V2	r	x	1.10"
MD02.refstack.20110907 V3	g	x	1.32"
MD02.refstack.20101126 V2	g	x	1.26"

with the approximate FWHM (major) as the PSF FWHM from a center field skycell after running psphot on the stacks.

MD02.GR0 reprocessed sample

• label: MD02.GR0
• data_group: MD02.GR0.20110902 = y
• data_group: MD02.GR0.20110903 = z
• data_group: MD02.GR0.20110906 = g
• data_group: MD02.GR0.20110905 = r
• data_group: MD02.GR0.20110904 = i
• dist_group: MD02.GR

A typo in the loading script set the workdir to be MD01 rather than MD02 for all filter data groups (see string below) but will not cause any trouble other than the directory name in mirroring data

/gpc1/MD02.GR0/MD01.20110906/MD02.V3/skycell.055/*unconv.fits