ASTROSAT CZTI

Data Quality Report

Orbit 55143

Creation date: 2025-12-08T10:32:29.062157
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_022T16_9000006532_55143cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55143cztM0_level2_quad_clean.evt
Size (bytes)565,922,88099,673,920
Size539.7 MB 95.1 MB
Events in quadrant A5,565,125630,689
Events in quadrant B3,467,455718,892
Events in quadrant C3,389,821644,409
Events in quadrant D7,970,778525,591

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217102
B0157942
C0156312
D0288022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71546869.589041%
B71552072.893082%
C7155901.257862%
D7155112215.681342%

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 9114 7154 561 561 6.16% 7.84%
B 9115 7156 62 62 0.68% 0.87%
C 9115 7157 43 43 0.47% 0.60%
D 9115 7155 1020 1020 11.19% 14.26%

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 32 2051149 11162.68 744 722 183.7
A 0 8 526221 2860.86 744 722 183.7
A 3 78 22381 117.91 744 722 183.7
B 4 81 318563 1944.21 759 731 163.5
B 5 185 58098 350.92 759 731 163.5
B 0 182 44210 265.97 759 731 163.5
C 14 254 168861 822.16 744 739 204.5
C 6 223 69844 337.94 744 739 204.5
C 12 250 51072 246.14 744 739 204.5
D 11 129 4222932 21667.77 690 661 194.9
D 15 94 387032 1982.77 690 661 194.9
D 11 176 364974 1869.57 690 661 194.9

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