ASTROSAT CZTI

Data Quality Report

Orbit 53675

Creation date: 2025-08-30T17:09:14.289363
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_022T05_9000006504_53675cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53675cztM0_level2_quad_clean.evt
Size (bytes)1,123,007,04065,540,160
Size1.0 GB 62.5 MB
Events in quadrant A15,143,891135,982
Events in quadrant B4,301,202682,879
Events in quadrant C12,501,399275,653
Events in quadrant D9,121,198434,954

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0494381
B0171711
C0416069
D0316031

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6519542883.264304%
B65193154.832029%
C6518390759.941700%
D6518186928.674440%

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 7593 6518 5094 5094 67.09% 78.15%
B 7594 6519 153 153 2.01% 2.35%
C 7592 6517 3549 3549 46.75% 54.46%
D 7593 6518 1700 1700 22.39% 26.08%

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 63 10794650 97597.52 447 437 110.6
A 3 78 1319796 11929.19 447 437 110.6
A 12 115 719080 6497.72 447 437 110.6
B 5 185 432998 2805.33 719 697 154.1
B 7 0 427842 2771.88 719 697 154.1
B 2 136 326137 2111.88 719 697 154.1
C 1 241 5671490 44947.23 456 452 126.2
C 15 224 4520766 35826.88 456 452 126.2
C 15 158 127183 1004.44 456 452 126.2
D 8 176 3207915 19108.45 581 555 167.9
D 12 34 1592619 9485.02 581 555 167.9
D 2 62 682010 4059.9 581 555 167.9

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