ASTROSAT CZTI

Data Quality Report

Orbit 55960

Creation date: 2026-02-05T23:53:15.611583
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_066T02_9000006546_55960cztM0_level2.fits modeM0/AS1A14_066T02_9000006546_55960cztM0_level2_quad_clean.evt
Size (bytes)651,761,280109,748,160
Size621.6 MB 104.7 MB
Events in quadrant A4,000,933742,404
Events in quadrant B4,122,791792,742
Events in quadrant C4,803,691700,792
Events in quadrant D10,567,268521,598

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178050
B0182480
C0205550
D0370396

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8138620.761858%
B81381451.781765%
C81392733.354220%
D8138201424.748095%

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 8138 8138 60 60 0.74% 0.74%
B 8138 8138 95 95 1.17% 1.17%
C 8139 8139 236 236 2.90% 2.90%
D 8139 8139 2022 2022 24.84% 24.84%

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 0 8 199904 923.71 866 843 215.5
A 7 64 190711 881.05 866 843 215.5
A 12 115 173129 799.46 866 843 215.5
B 2 249 393240 2126.58 857 824 184.5
B 0 199 121351 653.16 857 824 184.5
B 7 252 75280 403.49 857 824 184.5
C 1 29 537065 2334.91 841 833 229.7
C 2 12 422461 1835.89 841 833 229.7
C 15 199 219081 950.32 841 833 229.7
D 11 129 7415069 34537.74 760 728 214.7
D 5 173 58254 267.97 760 728 214.7
D 2 120 42167 193.03 760 728 214.7

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