ASTROSAT CZTI

Data Quality Report

Orbit 41881

Creation date: 2024-06-27T22:33:58.529772
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T05_124T01_9000005712_41881cztM0_level2.fits modeM0/AS1T05_124T01_9000005712_41881cztM0_level2_quad_clean.evt
Size (bytes)1,197,910,080299,499,840
Size1.1 GB 285.6 MB
Events in quadrant A14,166,6262,020,750
Events in quadrant B8,280,3742,134,377
Events in quadrant C9,925,9351,905,981
Events in quadrant D10,603,5081,789,541

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03664
C03671
D03660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0801
B0790
C0790
D0801

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A053591217
B036286115
C040459483
D043911234

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A176617274.116415%
B17681180.101804%
C176495333.020001%
D176584492.542757%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 25779 17717 362 362 1.40% 2.04%
B 25779 17729 5 5 0.02% 0.03%
C 25779 17704 517 517 2.01% 2.92%
D 25779 17719 385 385 1.49% 2.17%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 14 24 4800417 11963.95 2006 1970 401.1
A 10 83 1491057 3712.73 2006 1970 401.1
A 7 3 86641 211.11 2006 1970 401.1
B 0 156 239327 623.91 2007 1955 380.5
B 0 245 67335 171.84 2007 1955 380.5
B 0 190 55069 139.6 2007 1955 380.5
C 0 10 1657515 3798.1 1896 1909 435.9
C 15 214 687424 1572.63 1896 1909 435.9
C 14 254 172229 390.73 1896 1909 435.9
D 13 249 1074695 2264.47 1941 1891 473.8
D 12 6 675710 1422.29 1941 1891 473.8
D 2 249 452823 951.82 1941 1891 473.8

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter