ASTROSAT CZTI

Data Quality Report

Orbit 57490

Creation date: 2026-05-14T11:41:17.901892
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_113T09_9000006574_57490cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57490cztM0_level2_quad_clean.evt
Size (bytes)425,505,60099,803,520
Size405.8 MB 95.2 MB
Events in quadrant A3,024,412658,928
Events in quadrant B4,331,004677,172
Events in quadrant C4,358,799617,915
Events in quadrant D3,496,313583,698

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141392
B0177002
C0177622
D0153962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6945540.777538%
B69453985.730742%
C69451802.591793%
D69451381.987041%

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 7790 6945 3 3 0.04% 0.04%
B 7789 6945 237 237 3.04% 3.41%
C 7790 6946 113 113 1.45% 1.63%
D 7790 6946 85 85 1.09% 1.22%

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 7 64 32897 173.47 752 734 185.4
A 3 62 17869 92.42 752 734 185.4
A 4 3 17286 89.27 752 734 185.4
B 4 206 831014 5349.14 730 703 155.2
B 5 185 259780 1669.06 730 703 155.2
B 0 213 94820 606.33 730 703 155.2
C 15 224 1079477 5384.25 731 725 200.4
C 14 254 183613 912.83 731 725 200.4
C 12 250 83706 414.17 731 725 200.4
D 15 142 269082 1320.31 728 697 203.3
D 8 240 114173 558.24 728 697 203.3
D 12 248 68867 335.36 728 697 203.3

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