Data model: photoROSAT

General description: Match of objects in a field of an SDSS imaging catalog to the ROSAT All-Sky Survey Faint Source Catalogue and Bright Source Catalogue. These matches are to any objects which are RUN_PRIMARY according to the local resolve (see resolve documentation).

Naming convention: photoROSAT-RUN6-CAMCOL-FIELD4.fits

Approximate size: 20 kbytes.

File type: FITS

Read by products: sas

Written by products: photoop

Required header keywords:

• P_RESOLV (string): path for PHOTO_RESOLVE variable
• P_CALIB (string): path for PHOTO_CALIB variable

Required column names:

• run (int32): Run number
• camcol (int32): Camera column
• field (int32): Field number
• id (int32): The object id within a field. Usually changes between reruns of the same field
• rerun (string): Rerun number
• objID (int64): Unique SDSS identifier composed from [skyVersion,rerun,run,camcol,field,obj].
• run_resolve_status (int32): status flag for local resolve
• ra (float64): SDSS right ascension, J2000 (deg)
• dec (float64): SDSS declination, J2000 (deg)
• ROSAT_SOURCENAME (string): name of source in ROSAT
• ROSAT_RA (float64): J2000 right ascension of ROSAT source (deg)
• ROSAT_DEC (float64): J2000 declination of ROSAT source (deg)
• ROSAT_RADECERR (float32): error in coordinates (arcsec)
• ROSAT_FLAGS (string): screening flags (see ROSAT documentation)
• ROSAT_FLAGS2 (string): screening flags (see ROSAT documentation)
• ROSAT_CPS (float32): counts per second in broad band
• ROSAT_CPS_ERR (float32): error in count rate
• ROSAT_BGCPS (float32): counts per second from background
• ROSAT_EXPTIME (float32): exposure time (sec)
• ROSAT_HR1 (float32): hardness ratio 1
• ROSAT_HR1_ERR (float32): error in hardness ratio 1
• ROSAT_HR2 (float32): hardness ratio 2
• ROSAT_HR2_ERR (float32): error in hardness ratio 2
• ROSAT_EXT (float32): source extent (arcsec)
• ROSAT_EXTL (float32): likelihood of source extent
• ROSAT_SRCL (float32): likelihood of source detection
• ROSAT_EXTR (float32): extraction radius (arcsec)
• ROSAT_PRIORITY (string): priority flags (Sliding window detection history using either the background map (M) or the local background (B); 0 = no detection, 1 = detection; order of flags: M-broad, L-broad, M-hard, L-hard, M-soft, L-soft
• ROSAT_ERANGE (string): pulse height amplitude range with highest detection likelihood; A: 11-41, B: 52-201, C: 52-90, D: 91-201 ' ' or 'b' means 'broad' (11-235)
• ROSAT_VIGF (float32): vignetting factor
• ROSAT_ORGDAT (string): date when source was included (format: yymmdd; 000000: removed)
• ROSAT_MODDAT (string): date when source was modified (format: yymmdd; 000000: removed)
• ROSAT_ID (int32): number of identification candidates in correlation catalog
• ROSAT_FIELDID (int32): identification number of SASS field
• ROSAT_SRCNUM (int32): SASS source number in SASS field
• ROSAT_RCT1 (int16): number of nearby RASS detections with distances between 0 and 5 arcmin
• ROSAT_RCT2 (int16): number of nearby RASS detections with distances between 5 and 10 arcmin
• ROSAT_RCT3 (int16): number of nearby RASS detections with distances between 10 and 15 arcmin
• ROSAT_ITB (string): start time of observation (yymmdd.ff)
• ROSAT_ITE (string): end time of observation (yymmdd.ff)
• ROSAT_RL (int16): reliability of source detection (0 to 99, with 99 being highest)
• ROSAT_CAT (string): which catalog the source is in (faint or bright)