ASTROSAT CZTI

Data Quality Report

Orbit 56317

Creation date: 2026-02-24T12:19:07.462174
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_049T01_9000006552_56317cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56317cztM0_level2_quad_clean.evt
Size (bytes)806,074,56077,086,080
Size768.7 MB 73.5 MB
Events in quadrant A15,003,163121,001
Events in quadrant B3,782,265674,503
Events in quadrant C3,235,852605,722
Events in quadrant D7,320,458486,187

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0489905
B0155702
C0141202
D0261592

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6401544285.017966%
B64012253.515076%
C6401901.406030%
D6401117518.356507%

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 7566 6401 4860 4860 64.23% 75.93%
B 7566 6402 59 59 0.78% 0.92%
C 7566 6402 27 27 0.36% 0.42%
D 7566 6402 1113 1113 14.71% 17.39%

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 15 32 7570096 71545.77 418 408 105.8
A 4 95 4451604 42070.98 418 408 105.8
A 4 249 360094 3399.61 418 408 105.8
B 1 255 397359 2674.32 699 675 148.3
B 5 185 239823 1612.26 699 675 148.3
B 0 231 142362 955.21 699 675 148.3
C 12 252 154158 804.36 695 689 190.8
C 12 94 86559 450.06 695 689 190.8
C 9 237 66509 344.97 695 689 190.8
D 8 160 3350552 18346.43 644 614 182.6
D 2 249 547591 2995.6 644 614 182.6
D 14 52 371666 2032.12 644 614 182.6

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