ASTROSAT CZTI

Data Quality Report

Orbit 57282

Creation date: 2026-04-30T15:13:19.187396
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/AS1A14_049T03_9000006570_57282cztM0_level2.fits modeM0/AS1A14_049T03_9000006570_57282cztM0_level2_quad_clean.evt
Size (bytes)1,023,733,440198,216,000
Size976.3 MB 189.0 MB
Events in quadrant A8,837,0681,266,126
Events in quadrant B7,858,2241,322,304
Events in quadrant C11,732,2341,147,888
Events in quadrant D8,192,8781,128,996

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0374841
B0353131
C0463581
D0364131

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03320
B03320
C03320
D03320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A164601130.686513%
B164611851.123869%
C164619245.613268%
D164611661.008444%

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 17365 16736 47 47 0.27% 0.28%
B 17366 16737 29 29 0.17% 0.17%
C 17366 16737 684 684 3.94% 4.09%
D 17366 16737 118 118 0.68% 0.71%

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 8 4 923514 2112.34 1779 1729 436.4
A 3 14 723082 1653.04 1779 1729 436.4
A 3 95 124711 281.82 1779 1729 436.4
B 5 185 315927 833.6 1761 1691 377.0
B 0 199 145771 382.21 1761 1691 377.0
B 10 247 137709 360.83 1761 1691 377.0
C 15 224 3932706 8655.58 1687 1671 454.2
C 12 2 444655 975.39 1687 1671 454.2
C 12 252 165558 360.86 1687 1671 454.2
D 3 224 539921 1126.47 1716 1638 477.8
D 8 240 180514 374.34 1716 1638 477.8
D 5 173 133787 276.55 1716 1638 477.8

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