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ACS Instrument Science Report 99­10

ACS Quicklook PDF products
Anatoly Suchkov December 16, 1999

ABSTRACT. This report details the features of the ACS quicklook PDF products produced by the HST data pipeline. The requirements closely follow the design of paper products recommended by the Data Quality Committee, with appropriate changes required to fully support ACS.

1. .Introduction
A routine part of the HST data is the post-calibration production of PDF products files, or `HST PDF products' (also known as `quicklook products'), that summarize the data obtained. The general problem of producing these products was studied extensively by the Data Quality Committee and is described in their report (Sparks, et al. 1995). These products are used for both informing the GO and for data quality evaluation at the STScI. As such, the products must be general enough to support both sets of users. Previously these reports were produced as hard copies known as `Paper Products'. In 1999, printing of paper products was replaced with electronic distribution, and now PDF products are available on Web. This report describes in detail the requirements for the quicklook PDF products that summarize ACS data ..

2. Description of ACS Quicklook PDF products
ACS PDF products are designed to summarize a set of exposures. Typically, the set of exposures will constitute one visit in an observing proposal. The individual pages in the PDF products product either describe the details of a single exposure or, for the purpose of easy comparison, summarize the ensemble of exposures. A given page in the PDF products falls into one of two categories: visit-level page or exposure-level page. Below we list the individual pages­the pages are described in detail in Section 3, "Page Generation and Layouts," on page 4. In the PDF file, each of these pages will be indexed, so the observer can use the bookmarks feature in the Acrobat Reader to jump to any part of the quicklook product.

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Visit-level Pages · Cover Page A cover page containing the proposal ID, the visit number, the PI's name, and the proposal title. · · · Explanatory Notes A set of notes explaining the PDF products and the information they contain. Target List A table listing the targets in the set of observations being summarized. Observation Summary A table recapping the proposal information for each exposure for the set of observations being summarized including three processing and data quality flags. · · Optional Parameters A table listing the optional parameters for the set of observations being summarized. Observing Pattern Strategy A table listing the observing pattern for each exposure for the set of observations being summarized. Exposure-level Pages · Exposure Plots A graphical representation of the data contained in each exposure, including the final calibrated science image, a part of that image showing the details of the field centered at the target position (only for WFC), and, in case of associations, all individual images in a stamp format. · Data Quality Summary A comprehensive summary of the spacecraft performance, pipeline processing status, and calibration data quality for each exposure. · Calibration Reference File Summary A summary of the calibration processing switches and reference files used to process each exposure.

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Table 1: ACS PDF. Pages­Selection Criteria
Summary Level Visit Page Type Title Page Target List Observation Summary Optional Parameters Summary Observing Pattern Strategy Exposure Coronograph Acq. Images Final Science Image Summary Page Calibration Files Page Production Criteria All All All All All OBSMODE equal to ACQ All All All Filename Extension(s) Indicating Source of Keywords and Dataa _raw and _spt _raw and _spt _raw and _jih and _trl _raw _raw and _spt _flt _flt and _crj and _sfl _trl and _jih _flt and _crj and _sfl

3 a. For the _flt files, PDF products are generated only if there are no _crj or _sfl files.


3. Page Generation and Layouts
Table 1 summarizes the criteria for producing ACS PDF products pages. The table lists the individual page types followed by the criteria that trigger the creation of a given page. For those pages that are always produced, the criterion is stated as "All". Additionally, the table lists the data files from which to extract the keyword and plot information. If no file can be found satisfying the selection criteria, a warning message is produced by the PDF products task. Title Page The Title Page consists of a Header, and four (4) keyword/value pairs. See Table 2 for a description of the keyword-value pairs to be included on the Title Page. The visit and title keywords are found in the _spt file. The proposal and PI name keywords are found in the primary header of the _raw file. The keyword/value pairs are written in 20 point size. See page 16 for an example of the title page.

Table 2: Title Page Keyword/Value Pairs
Label Proposal Visit PI Title Found in Header Keyword(s) PROPOSID OBSET_ID PR_INV_L PR_INV_F PROPTTL1 PROPTTL2 Print Format i4 i2 c18 c18 c68 c68

Explanatory Notes The Explanatory Notes page is an instruction sheet for using and understanding the collection of ACS PDF products pages. As this information describes the PDF products themselves, as opposed to the observations, this page does not change from visit to visit. The section headers are written in bold font style. The headers in each section are written in 12 point Narrow Helvetica Bold. The text in each section is written in 12 point Times. See page 17 for an example of the explanatory notes. Target List The Target List is a table containing target names, positions, and target descriptions. The target name and description are derived from the proposal information. The positions are the calculated positions based on processing of the proposal by the ground system.

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Keywords for the target name and coordinates are found in the primary header of the _raw file. The keyword for the description is found in the _spt file. See Table 3 for a description of the keyword/value pairs to be included. See page 18 for an example of the target list table.

Table 3: Target List Keyword/Value Pairs
Column Name Target Name RA (J2000) DEC (J2000) Description Found in Header Keyword TARGNAME RA_TARG DEC_TARG TARDESCR TARDESC2 Print Format c30 hh:mm:ss.ss ddd:mm:ss c68 c68

Observation Summary The Observation Summary consists of the instrument configuration as downlinked from the spacecraft in the science data stream. While the specification of the instrument configuration uses proposal instruction language, wherever possible, actual rather than predicted values are used. All keywords are found in the primary header of the _raw file. See Table 4 for a description of the keyword/value pairs to be included. The field Frame in Table 4 should be set to FULL if SUBARRAY=F and SUBARRAY if SUBARRAY=T. See page 18 for an example of the observing summary table.

Table 4: Observation Summary Keyword/Value Pairs
Column Name Visit-Exp # Rootname Target Name Observation Type Detector Used Frame Operating Mode Spectral Element 1 Spectral Element 2 Found in Header Keyword(s) PEP_EXPO ROOTNAME TARGNAME IMAGETYP DETECTOR SUBARRAY OBSMODE FILTER1 FILTER2 Print Format c15 c9 c30 c30 c3 c8 c10 c7 c7

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Column Name Aperture Exposure Time OBS1 PROC1 CAL1

Found in Header Keyword(s) APERTURE EXPTIME See "Procedural Quality Flags" on page 6. See "Procedural Quality Flags" on page 6. See "Procedural Quality Flags" on page 6.

Print Format c16 f8.3 c1 c1 c1

1

These three columns should be straddled by the column label: "Procedural Quality Flags".

Procedural Quality Flags OBS The OBS quality flag summarizes as good or bad the spacecraft performance during the execution of the observations as described by the OMS data. All information used in determining the value of this flag comes from the _jih header file. The flag should be set to UNKNOWN (represented by a blank) when the _jih does not exist. The flag should be set to BAD (represented by a filled circle) if any one of the following conditions is true · · · · · TNRECENT > 0 TNLOSSES > 0 MV2_P2P > 0.06" MV3_P2P > 0.06" Any of the following keywords appears in the _jih header: T_ACQ2FL, T_GSFAIL, T_TAPDRP, T_SLEWNG, T_TDFDWN, T_SISAFE, NO_SAM, NO_SLEW, SD_LOST, FW_ERROR, SISUSPND. The flag should be set to GOOD (represented by an open circle) otherwise. PROC The PROC quality flag summarizes as good or bad the pipeline processing status for all of the individual processes that comprise the pipeline (e.g., data capture, data partitioning, generic conversion, science calibration, and data archiving). Problems during any phase of pipeline processing results in messages being written to the _trl file. Thus, the _trl file is dredged to look for messages to determine the status of the processing.

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The flag should be set to UNKNOWN (represented by a blank) when the _trl file does not exist. The flag should be set to BAD (represented by a filled circle) if the string "ERROR" is found in the _trl file. Errors of this type are written by CALACS, and represent conditions that could result in the interruption of science calibration. The flag should be set to GOOD (represented by an open circle) otherwise. CAL The CAL quality flag summarizes the quality of the calibration reference data used in calibrating the observations. Problems with the calibrations are written to the _trl file by CALACS. The flag should be set to UNKNOWN (represented by a blank) when the _trl file does not exist. The flag should be set to bad (represented by a filled circle) if any of the following conditions is true: 1. The string "DUMMY" appears in the _trl file In the case of all calibration switches being set to "OMITTED", the flag should be set with the value of "NOT APPLICABLE" (represented by "N/A"). The flag should be set to good (represented by an open circle) otherwise. Optional Parameters Summary The Optional Parameters summary consists of additional instrument configuration items which are specified in the proposal as optional parameters. As with the Observation Summary, the telemetry values are used rather than the predicted ones. If an optional parameter was not set explicitly, the default value appears in the summary. See Table 5 for a description of the keyword-value pairs to be included. All keywords are found in the primary header of the _raw file.

Table 5: Optional Parameter Keyword/Value Pairs
Column Name Visit-Exp # Rootname Found in Header Keyword(s) PEP_EXPO ROOTNAME Print Format c15 c9

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Column Name Target Name Detector Used Operating Mode Optional Parameters

Found in Header Keyword(s) TARGNAME DETECTOR OBSMODE See Table 6

Print Format c30 i1 c10

The optional parameters are written as strings with the format: KEYWORD=VALUE. Since there can be multiple optional parameters for a given configuration/mode, multiple KEYWORD=VALUE strings are concatenated and separated with a comma. Table 6 gives the rules for constructing the optional parameter value that appears in the Optional Parameter Summary. The set of optional parameters to use is determined from the values of the DETECTOR and OBSMODE keywords and are found in the primary header of the _flt or _sfl file.

Table 6: Optional Parameter Keyword/Value Pairs
DETECTOR WFC, HRC OBSMODE ACCUM Optional Parameter Header Keyword GAIN SIZEAXIS2 PAREXP Label GAIN SIZEAXIS2 PAREXP Print Format i2 i4 c8

Observing Pattern Strategy The Observing Pattern Strategy summary consists of additional instrument configuration items which are specified in the proposal as optional parameters and give information on the selected dither/mosaic strategy. See Table 7 for a description of the keyword-value pairs to be included. All the keywords are found in the primary header of the _flt or _sfl files. If PATTERN=NONE, the rest of pattern related parameters should appear as "NON APPLICABLE", i.e. indicated by zeroes in the table. See page 19 for example of the Summary Page.

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Table 7: Observing Pattern Strategy Keyword/Value Pairs
Column Name Visit-Exp # Rootname Target Name Detector Used Operating Mode Pattern Name Pattern Orient Number of Points Found in Header Keyword(s) PEP_EXPO ROOTNAME TARGNAME DETECTOR OBSMODE PATTERN1 P1_ORINT P1_NPTS Print Format c15 c9 c30 c3 c10 c16 f5.2 i2

Exposure Plots Exposure Plot pages present two kinds of information: 1) descriptive information taken from header keywords and 2) graphical representations of the data. Auto-parallel exposures are displayed the same way as primary exposures. Exposure Plot Keywords There are common sets of keywords used to describe different exposures as well as keywords that are specific to a given instrument configuration and observing mode. We have grouped keywords into sets to assist in the production of the ACS PDF products. Three sets of keywords are common to all exposure plots: the OBS set describes the observations, the TARGET set describes the target, and the IMAGING set describes the exposure and is determined by the detector in use and the observing mode and type. See previous section "Observing Pattern Strategy" for details on the values of the pattern related optional parameters. Tables 8, 9 and 10 list all the sets of keywords. The values for the plate scale will be 0.05", 0.025 x 0.028", and 0.0.030 x 0.034" for WFC, HRC, and SBC, respectively. On the ACS Exposure Plot pages the groups of keywords appear in a vertical column on the right-hand side of the page. Within the column, groups are separated by a single blank line.

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Table 8: OBS Keyword/Value Pairs
Label Rootname Obs. Date Obs. Time Obs. Type Header Keyword(s) ROOTNAME DATE-OBS TIME-OBS IMAGETYP Print Format c9 c8 c8 C30

Table 9: TARGET Keyword/Value Pairs
Label Target Name RA (J2000) DEC (J2000) Header Keyword(s) TARGNAME RA_TARG DEC_TARG Print Format c30 hh:mm:ss.ss ddd:mm:ss

Table 10: IMAGING Keyword/Value Pair
Label Detector Aperture Observation Mode Filter 1 Filter 2 Exp Time Frame Image Orientation Pattern Name Pattern Orient Number of Positions Current Position Number Header Keyword(s) DETECTOR APERTURE OBSMODE FILTER1 FILTER2 EXPTIME SUBARRAY ORIENTAT PATTERN1 P1_ORIENT P1_NPTS PATTSTEP Print Format c3 c10 c10 c7 c7 f8.3 l1 f5.2 c16 f5.2 i2 i2

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Exposure Plot Graphics For operating modes other than ACQ, the end product of each exposure, i.e. calibrated on-target image, will be presented on a grey scale linear plot in an RA, DEC scale. To convert from (x,y) coordinates into RA, DEC, the detector plate scale will be used. These parameters are found in the extension headers of the _raw file.The position of the target, as specified by the RA_TARG and DEC_TARG keywords, will also be indicated (see page 20 for an example). For this purpose, the world coordinate system parameters CRPIX1, CRPIX2, CRVAL1, CRVAL2, CD1_1, CD1_2, CD2_1, and CD2_2 will be used. For WFC exposures, a smaller field, 25 x 25 arcsec in size, centered at the target position, will be presented on a separate page right after the page with the full image. Additional information consists of: (1) a compass indicating the directions of North and East; and (2) a rectangular bar showing the greyscale used to display image in count rate. For images with CR-SPLIT other than NO and for images with the number of iteration more than 1, there will be additional pages displaying each individual exposure in a stamp size format (2.5 by 2.5 cm), with a maximum of 50 plots per page. For the ACQ operating mode, the combined calibrated acquisition image (200 x 200 pix) will be presented. Summary Page The Summary Page gives the detailed data quality summary of the observation using information extracted from the OMS products (_jih file), the trailer file (_trl) and keywords from the science header. This information formed the basis for the setting of the data quality flags in the Observation Summary table. The page consists of four "areas" of information which are described below. See page 18 for an example of the Summary Page. The default value for the data quality "areas" of the Summary page is "File not available" whenever the _jih or _trl do not exist. If the status is good, the message written is "No anomalies". Error messages are described in detail in the following three sections. HST Spacecraft Performance Summary OMS keywords are used to provide the HST Performance Summary. The keyword/ value pairs are listed in Table 11. The presence of special OMS keywords in the _jih header file result in information messages being written below the keyword/value pairs. The special keywords are only written to OMS headers under unusual spacecraft performance. If special keywords exist, the messages listed in Table 12 should be included. All keywords in Table 12 starting with a "T" are found in the primary header of the _jih file whereas the rest are found in the extensions of the _jih file.

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Table 11: OMS Keywords used to Populate HST Performance Status
Description # Recenterings # Losses of Lock V2 Jitter (RMS) V2 Jitter (P2P) V3 Jitter (RMS) V3 Jitter (P2P) Header Keyword(s) TNRECENT TNLOSSES TV2_RMS MV2_P2P TV3_RMS MV3_P2P Print Format i3 i3 f5.2 f5.2 f5.2 f5.2

Table 12: OMS Special Keywords
Header Keywords & Selection Criteria T_ACQ2FL=T T_GSFAIL=T T_TAPDRP T_SLEWNG=T T_TDFDWN=F T_SISAFE=T NO_SAM=T NO_SLEW=T SD_LOST=T FW_ERROR=T SISUSPND=T

Description

Print Format

Target acquisition failure Guide star acquisition failure Possible loss of science data Slewing occurred during this observation Take data flag not on throughout observation Obs. affected when science instrument safed Requested small angle maneuver rejected Requested slew maneuver not executed Science data may be lost due to instrument error Error occurred with filter wheel Instrument suspended during observation

c50 c50 c50 c50 c50 c50 c50 c50 c50 c50 c50

Pipeline Processing Summary Errors that occur during pipeline processing are written to the trailer file (_trl). As described in "Data Quality Flags", error messages are searched for in the trailer file: · The string "ERROR" is found in the _trl file. Errors of this type are written by CALACS, and represent conditions that could result in the interruption of science calibration.

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If any error messages are found, then the line containing the search string is written to the Pipeline Processing "area" of the Summary Page. Calibration Data Quality Summary This section of the Summary Page is used to alert observers to the use of dummy or fill-value calibration reference files in the pipeline calibration. If the string "DUMMY" is dredged from the trailer file, then the line containing "DUMMY" is written to the Calibration Data Quality "area" of the Summary Page. Keyword/Value Pairs A set of keyword/value pairs identical to the ones included in the Exposure Plots pages (see Tables 8, 9 and 10) is written to the right of the page in a column. Calibration Status Summary The Calibration Status Summary is a detailed description of calibration switches and associated calibration reference files. Included in the description of the files is the pedigree information. The switch value, reference file and pedigree information is filled from the science header keywords as shown in the table below. The pedigree information must be associated with the appropriate switches. Only those switch keywords that are present in the header should be written to the Calibration Status Summary. Table 13 lists the calibrations switches, the text string that describes the switches and the applicable reference files for each switch. The Calibration Status Summary includes all switches and files found in the primary header of the _flt or _sfl files. See page 24 for an example of the calibration status summary.

Table 13: Calibration Switches and Reference File Keywords
Calibration Switch DQICORR BIASCORR GLINCORR DARKCORR FLATCORR ATODCORR BLEVCORR Calibration Value DQIDONE BIASDONE GLINDONE DARKDONE FLATDONE ATODDONE BLEVDONE Calibration Reference File BPIXTAB BIASFILE GLINTAB DARKFILE FLATFILE ATODTAB OSCNTAB Calibration Reference File Pedigree BPIXPDGR BIASPDGR GLINPDGR DARKPDGR FLATPDGR ATODPDGR OSCNPDGR

Description

Mask bad pixels Bias subtraction Global nonlinearity correction Dark subtraction Flat field correction A to D conversion correction Subtract overscan bias

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Calibration Switch SHADCORR PHOTCORR CRCORR STATCORR

Calibration Value SHADDONE PHOTDONE CRDONE STATDONE

Description

Calibration Reference File SHADFILE PHOTTAG N/A N/A

Calibration Reference File Pedigree SHADPDGR PHOTPDGR N/A N/A

Shutter shading correction Photometric caliibration Reject cosmiic rays Photometric keywords

Additional Layout Notes · · · · · All pages for the ACS PDF products are in landscape orientation. The font used is Helvetica Narrow. The character size used is 9 points for keyword-value pairs and 12 point for informational text or messages. Margins will be 1.25 cm on all sides. Keyword names used as labels are right justified and aligned and separated from the left justified and aligned values by a colon. For example: KEYWORD1: KEYWORD2: · · · · · · · VALUE1 VALUE2

Table columns are left justified. Information messages written to the Summary Page are left justified. Numbers should be right justified. Table rows are separated by a thin horizontal line. The table header is separated from the table rows by a double set of thin horizontal lines. Column headers and table titles are in bold type­other text is in plain type. Each page has a Header which consists of a rectangular box of dimensions 1.25 cm by 25.4 cm and is filled at (approximately) 30% grey. The text string "ACS" is right justified within the box printed in 36 point Bold-Oblique font. Headers for visit pages have the proposal id centered in the rectangular header box. The format is "Proposal: 9999" and is written in 18 point font. Headers for visit pages have the string "Visit: 01" left-justified in the header box and written in 18 point font. The value for Visit is the value of the OBSET_ID keyword in the science header file. Headers for the exposure pages have the string "Visit-Exp#: 01-10" left-justified in the header box and written in 18 point font. The value for Visit-Exp# is the value of the PEP_EXPO keyword in the science header file.

· ·

·

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·

Headers for exposure pages have the type of observation followed by the string "Observation:", exposure rootname, and proposal id centered in the rectangular header box. The format is "Prime Observation: A1234501 Proposal: 9999" and is written in 18 point font. The observation type is the value of the IMAGETYP keyword. If data from more than one visit or proposal is found in the input data, do not write the visit or proposal number in the summary pages headers.

·

Future enhancements to be defined as we gain on orbit experience. Acknowledgements Steve Hulbert and Luis Colina provided us with the FrameMaker version of the STIS and NICMOS paper products instrument science reports, respectively.

4. References
W.B. Sparks, D. Swade, S. Baum, S. Casertano, C. Cox, S. Hulbert, R.Jedrzejewski, A. Koratkar, S. Parsons, M.A. Rose, K. Tittle. HST PDF: A Report by the Data Quality Project. STScI, 1995.

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ACS
Proposal: Visit: PI: Title: 9999 01 Smith, R. Search for Primeval Galaxies in the Early Universe

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ACS
Description of Visit Summaries
Target List The Target List contains the target name, the coordinates for the target as calculated by the ground system based on the target information taken from the proposal, and the text description of the target given in the proposal. Note that the coordinates listed represent the predicted position of the target in the sky and do not give the pointing of HST at the time of the observation. Observation Summary with Data Quality Flags The Observation Summary contains information that uniquely identifies individual exposures as specified in the observing proposal. Additionally, the status of the spacecraft and ground-system performance during the execution of the observation are summarized by the Procedural Quality Flags: OBS Status of the performance of HST PROC Status of the pipeline processing of the observations. CAL Status of the reference data used in calibration. The symbols used to indicate the status of the Procedural Quality are: OK. r q Not OK­Refer to the Data Quality Summary for details. Blank Status unknown. Optional Parameters Summary The Optional Parameters Summary contains additional instrument configuration information. Entries in the table reflect the values of the Optional Parameters, other than pattern related, specified in the observing proposal.

Description of Exposure Summaries
Plots for Each Exposure Plots are created for each exposure. Grey-scale plots are produced as appropriate for the instrument configuration and observing mode for each exposure. Exposure information taken from the headers of the data files is also provided. Data Quality Summary for Each Exposure The Data Quality Summary contains details of problems flagged by the Data Quality flags. Exposure information taken from the headers of the data files is also provided. Calibration Status Summary for Each Exposure The calibration summary gives detailed information about the calibration of the observations. Individual calibration steps are listed with completion status. Reference files used are listed by name and information about the pedigree of the calibration data is provided

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Visit: 01

Proposal: 9999

ACS

Targets List
Target Name HD000000 RA 12h 00m 00.00s DEC +10° 0' 00.0" Equinox J2000 Description

Observation Summary
Operating Mode ACCUM ACCUM ACCUM Spectral Element 1 F814W F250W F115LP Spectral Element 2 CLEAR CLEAR CLEAR Exposure Time (sec) 420 160 160 Procedural Quality Flags OBS q r q PROC r r CAL r r q

Visit­Exp #

Rootname

Target Name

Observation Type

Detector

Frame

Aperture

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01-10 01-10 01-30 A1234501 A1234502 A1234503 HD000000 HD000000 HD000000 PRIMARY AUTOPARALLEL PRIME WFC HRC SBC FULL FULL FULL WFC1-FIX HRC SBC

r = OK; q = Not OK; blank = Unknown


Visit: O1

Proposal: 9999

ACS

Optional Parameters Summary
Visit-Exp # 01-10 01-30 01-50 Rootname A1234501 A1234502 A1234503 Target Name HD000000 HD000000 HD000000 Detector WFC HRC SBC Operating Mode ACCUM ACCUM ACCUM Optional Parameters GAIN=2 GAIN=2

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Observing Pattern Strategy
Visit-Exp # 01-10 01-30 01-50 Rootname A1234501 A1234502 A1234503 Target Name HD000000 HD000000 HD000000 Detector WFC HRC SBC Operating Mode ACCUM ACCUM ACCUM Pattern Name ACS-DITHER-BOX ACS-DITHER-BOX NONE Pattern Orient 45.50 45.20 0.0 Number of points 4 4 0


Visit-Exp#: 01-10

Primary Observation: A1234501 Proposal: 9999
HD00000: CALIBRATED WFC IMAGE

ACS
Rootname: Obs. Date: Obs. Time: Observation Type Target: RA (J2000): DEC (J2000): A1234501 02 Feb 02 12:00:00 PRIMARY HD00000 12h 00m 00.00s +10D 00' 00.0"

Detector: Aper ture: Observation Mode: Filter 1: Filter 2: Exp. Time: Frame: Image orientation: Pattern Name Pattern Orient: Number of Positions: Current Position Number

WFC WFC1--FIX ACCUM F814W CLEAR 420 s FULL 330 degrees ACS-DITHER-BOX 45.50 degrees 4 1

0

E

N

20

4

8

12 Count rate (gain=2)


Visit-Exp#: 01-10

Primary Observation: A1234501 Proposal: 9999

ACS
Rootname: Obs. Date: Obs. Time: Observation Type Target: RA (J2000): DEC (J2000): A1234501 02 Feb 02 12:00:00 PRIMARY HD00000 12h 00m 00.00s +10D 00' 00.0"

HD00000: CALIBRATED WFC IMAGE: 25 X 25 ARCSEC FIELD CENTERED AT THE TARGET POSITION

Detector: Aper ture: Observation Mode: Filter 1: Filter 2: Exp. Time: Frame: Image orientation: Pattern Name Pattern Orient: Number of Positions: Current Position Number

WFC WFC1--FIX ACCUM F814W CLEAR 420 s FULL 330 degrees ACS-DITHER-BOX 45.50 degrees 4 1

0

E

N

21

4

8

12 Count rate (gain=2)


Visit-Exp#: 01-10

Primary Observation: A1234501 Proposal: 9999

ACS

1

pixels

4096

patt-pos: 1 #1

patt-pos: 1 #2

patt-pos: 2 #1

patt-pos: 2 #2

1

pixels

4096

1

pixels

4096

patt-pos: 3 #1

patt-pos: 3 #2

patt-pos: 4 #1

patt-pos: 4 #2

22
1 pixels 4096


Visit-Exp#: 01-10 Observation: A1234501
HST Spacecraft Performance Summary
V2 Jitter (RMS): V3 Jitter (RMS): V2 Jitter (PP): V3 Jitter (PP): 2.0 mas 1.0 mas 2.0 mas 1.0 mas

Proposal: 9999

ACS
Rootname: Obs. Date: Obs. Time: Observation Type Target: RA (J2000): DEC (J2000): Detector: Aper ture: Observation Mode: Filter 1: Filter 2: Exp. Time: Frame: Image orientation: Pattern Name Pattern Orient: Number of Positions: Current Position Number o1234501 02 Feb 96 12:00:00 PRIMARY HD00000 12h 00m 00.00s +10D 00' 00.0" WFC 2 WFC1--FIX ACCUM F606W CLEAR 420 s FULL 330 degrees ACS-DITHER-BOX 45.50 degrees 4 1

23

Pipeline Processing Summary
No anomalies

Calibration Data Quality Summary
No anomalies.


Visit-Exp#: 01-10 Observation: A1234501

Proposal: 9999

ACS

Calibration Status Summary
Switches and Flags Keyword
DQICORR ATODCORR BLEVCORR BIASCORR CRCORR GLINCORR DARKCORR FLATCORR

Reference Files and Tables Calibration Step
Mask bad pixels Correct for A to D conversion Subtract overscan bias Subtract bias image Reject cosmic rays Correct for global nonlinearity Dark subtraction Flat field correction Shutter shadow correction Photometric calibration Compute statistics

Value
PERFORMED PERFORMED PERFORMED PERFORMED PERFORMED PERFORMED PERFORMED PERFORMED PERFORMED PERFORMED PERFORMED

Keyword
BPIXTAB ATODTAB OSCNTAB BIASFILE N/A MLINTAB DARKFILE FLATFILE SHADFILE PHOTTAB N/A

Value
f0000006o f0000002o f0000002o f0000003o

Pedigree
GROUND GROUND GROUND GROUND DEC02 DEC02 DEC02 DEC02

f0000006o f0000004o f0000005o f0000005o f0000006o

GROUND GROUND GROUND GROUND GROUND

DEC02 DEC02 DEC02 DEC02 DEC02

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SHADCORR PHOTCORR STATCORR


Visit-Exp#: 01-30

Auto-Par Observation: A1234502
HD00000: CALIBRATED HRC IMAGE

Proposal: 9999

ACS
Rootname: Obs. Date: Obs. Time: Target: RA (J2000): DEC (J2000): Observation Type Detector: Aper ture: Observation Mode: Filter 1: Filter 2: Exp. Time: Frame: Image orientation: Pattern Name Pattern Orient: Number of Positions: Current Position Number A1234502 02 Feb 02 12:00:00 HD00000 12h 00m 00.00s +10D 00' 00.0" AUTOPARALLEL HRC HRC--FIX ACCUM F250W CLEAR 160 s FULL 330 degrees ACS-DITHER-BOX 45.50 degrees 4 1

0

E

N

25

4

8

12 Count rate (gain=2)


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