ASTROSAT CZTI

Data Quality Report

Orbit 58833

Creation date: 2026-08-12T18:10:30.639274
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_106T01_9000006596_58833cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58833cztM0_level2_quad_clean.evt
Size (bytes)537,480,00089,743,680
Size512.6 MB 85.6 MB
Events in quadrant A7,455,527483,389
Events in quadrant B4,190,774649,949
Events in quadrant C3,570,469598,605
Events in quadrant D4,198,084553,449

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262901
B0164971
C0148161
D0166651

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6186168027.158099%
B61865058.163595%
C61871812.925489%
D61863325.366958%

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 7311 6187 1478 1478 20.22% 23.89%
B 7311 6187 228 228 3.12% 3.69%
C 7312 6187 116 116 1.59% 1.87%
D 7311 6187 221 221 3.02% 3.57%

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 15 233 2900972 18378.45 631 614 157.8
A 13 248 1110952 7035.78 631 614 157.8
A 10 251 834543 5284.29 631 614 157.8
B 5 185 556917 3791.62 695 674 146.7
B 4 236 276387 1879.39 695 674 146.7
B 5 172 125751 852.58 695 674 146.7
C 13 3 362788 1905.52 686 681 190.0
C 6 223 170844 895.45 686 681 190.0
C 2 255 111982 585.7 686 681 190.0
D 12 110 1153124 5845.37 695 666 197.2
D 5 32 94366 475.26 695 666 197.2
D 12 248 62942 315.87 695 666 197.2

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

TCT plots

Parameter TCT0 TCT_healed
Tct