ASTROSAT CZTI

Data Quality Report

Orbit 51580

Creation date: 2025-04-11T16:12:45.818916
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/AS1A13_037T05_9000006460_51580cztM0_level2.fits modeM0/AS1A13_037T05_9000006460_51580cztM0_level2_quad_clean.evt
Size (bytes)978,177,600117,840,960
Size932.9 MB 112.4 MB
Events in quadrant A10,276,384848,016
Events in quadrant B5,040,8041,010,193
Events in quadrant C10,724,031250,362
Events in quadrant D9,411,889785,596

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0372612
B0216492
C0388702
D0344992

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01980
B01980
C01980
D01980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9718116411.977773%
B97181781.831653%
C9718709773.029430%
D971898510.135830%

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 11663 9720 782 782 6.70% 8.05%
B 11663 9720 32 32 0.27% 0.33%
C 11662 9714 940 940 8.06% 9.68%
D 11663 9720 892 892 7.65% 9.18%

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 7 64 2597519 10369.17 1030 1006 250.4
A 12 3 1811922 7231.89 1030 1006 250.4
A 12 250 544674 2171.14 1030 1006 250.4
B 7 252 145089 628.27 1060 1021 229.3
B 10 44 115775 500.43 1060 1021 229.3
B 0 216 82181 353.93 1060 1021 229.3
C 15 198 7937066 79171.03 363 360 100.2
C 3 233 205417 2045.51 363 360 100.2
C 13 3 159228 1584.76 363 360 100.2
D 8 176 1869027 6564.84 1014 976 284.6
D 2 120 881525 3094.49 1014 976 284.6
D 12 6 741833 2603.57 1014 976 284.6

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