ASTROSAT CZTI

Data Quality Report

Orbit 54628

Creation date: 2025-11-02T21:45:44.549473
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_066T07_9000006522_54628cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54628cztM0_level2_quad_clean.evt
Size (bytes)432,103,68099,990,720
Size412.1 MB 95.4 MB
Events in quadrant A3,838,783652,557
Events in quadrant B3,505,620698,240
Events in quadrant C4,608,018604,779
Events in quadrant D3,503,394589,178

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161782
B0152542
C0185732
D0152882

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69292113.045172%
B69291852.669938%
C69293535.094530%
D69291311.890605%

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 7834 6930 113 113 1.44% 1.63%
B 7834 6930 86 86 1.10% 1.24%
C 7834 6930 184 184 2.35% 2.66%
D 7834 6930 62 62 0.79% 0.89%

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 5 243 203592 1082.93 767 749 187.3
A 11 3 190903 1015.19 767 749 187.3
A 13 248 132204 701.81 767 749 187.3
B 1 207 200694 1217.01 755 728 164.3
B 10 247 116026 701.71 755 728 164.3
B 7 0 86756 523.57 755 728 164.3
C 4 5 696230 3402.08 736 728 204.4
C 13 3 632287 3089.3 736 728 204.4
C 12 249 152681 743.28 736 728 204.4
D 3 144 122017 566.71 751 719 214.0
D 1 232 90973 421.67 751 719 214.0
D 8 160 70008 323.72 751 719 214.0

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