ASTROSAT CZTI

Data Quality Report

Orbit 56598

Creation date: 2026-03-15T10:09:05.759322
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_083T06_9000006558_56598cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56598cztM0_level2_quad_clean.evt
Size (bytes)543,729,60099,889,920
Size518.5 MB 95.3 MB
Events in quadrant A4,521,898652,265
Events in quadrant B5,552,797650,039
Events in quadrant C4,608,498610,589
Events in quadrant D4,815,313549,003

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193831
B0224222
C0197271
D0203851

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80902342.892460%
B808986510.693534%
C80892563.164792%
D80891682.076895%

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 8372 8372 202 202 2.41% 2.41%
B 8371 8371 612 612 7.31% 7.31%
C 8371 8371 168 168 2.01% 2.01%
D 8371 8371 152 152 1.82% 1.82%

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 4 95 415431 1910.6 867 843 217.0
A 10 251 326690 1501.64 867 843 217.0
A 8 249 115277 527.36 867 843 217.0
B 5 185 2038199 11543.78 830 800 176.5
B 4 21 81206 455.58 830 800 176.5
B 10 247 34912 193.28 830 800 176.5
C 12 252 542396 2380.8 841 834 227.5
C 15 208 292139 1280.62 841 834 227.5
C 15 230 194649 852.04 841 834 227.5
D 6 239 603527 2580.67 836 797 233.6
D 2 31 224594 958.22 836 797 233.6
D 2 249 170337 725.91 836 797 233.6

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