ASTROSAT CZTI

Data Quality Report

Orbit 58590

Creation date: 2026-07-27T11:34:11.959900
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_044T04_9000006592_58590cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58590cztM0_level2_quad_clean.evt
Size (bytes)542,629,440100,848,960
Size517.5 MB 96.2 MB
Events in quadrant A4,247,935654,508
Events in quadrant B6,622,037673,941
Events in quadrant C5,048,662612,350
Events in quadrant D3,581,000586,679

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176046
B0248520
C0203130
D0162260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75611051.388705%
B75617559.985452%
C75612573.399021%
D7562260.343824%

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 7756 7756 87 87 1.12% 1.12%
B 7757 7748 532 532 6.86% 6.87%
C 7757 7757 250 250 3.22% 3.22%
D 7758 7758 30 30 0.39% 0.39%

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 14 751873 3595.59 837 814 208.9
A 8 249 76764 363.6 837 814 208.9
A 10 17 52644 248.13 837 814 208.9
B 5 172 2631704 15207.05 808 779 173.0
B 6 255 355946 2052.91 808 779 173.0
B 0 171 158625 912.37 808 779 173.0
C 12 254 1140569 5133.5 806 800 222.0
C 12 252 157718 706.76 806 800 222.0
C 1 12 150628 674.82 806 800 222.0
D 12 248 92822 399.67 810 773 230.3
D 2 120 85409 367.48 810 773 230.3
D 8 240 76906 330.56 810 773 230.3

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