ASTROSAT CZTI

Data Quality Report

Orbit 57626

Creation date: 2026-05-23T13:21:28.573180
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_070T08_9000006576_57626cztM0_level2.fits modeM0/AS1A14_070T08_9000006576_57626cztM0_level2_quad_clean.evt
Size (bytes)432,020,16088,433,280
Size412.0 MB 84.3 MB
Events in quadrant A3,155,641592,041
Events in quadrant B2,741,001640,441
Events in quadrant C3,526,011560,652
Events in quadrant D6,120,824481,190

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133841
B0121291
C0146541
D0221891

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5770550.953206%
B5771831.438226%
C57712023.500260%
D577174412.892046%

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 6945 5771 17 17 0.24% 0.29%
B 6946 5772 3 3 0.04% 0.05%
C 6946 5772 120 120 1.73% 2.08%
D 6946 5772 703 703 10.12% 12.18%

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 3 14 562216 3569.65 642 627 157.3
A 10 251 57816 363.51 642 627 157.3
A 4 249 33290 207.62 642 627 157.3
B 7 252 44062 323.7 636 614 134.2
B 0 245 30538 222.94 636 614 134.2
B 10 247 26667 194.1 636 614 134.2
C 15 224 727320 4306.77 623 617 168.7
C 12 2 213178 1259.73 623 617 168.7
C 14 254 73898 434.3 623 617 168.7
D 2 62 1952860 11529.78 596 569 169.3
D 15 142 680814 4017.37 596 569 169.3
D 8 240 614657 3626.66 596 569 169.3

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