ASTROSAT CZTI

Data Quality Report

Orbit 54173

Creation date: 2025-10-03T07:08:28.408279
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_012T01_9000006512_54173cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54173cztM0_level2_quad_clean.evt
Size (bytes)761,886,720110,724,480
Size726.6 MB 105.6 MB
Events in quadrant A6,300,498707,315
Events in quadrant B4,232,854838,829
Events in quadrant C5,559,182721,408
Events in quadrant D11,468,434509,532

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247770
B0186500
C0222990
D0399446

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A827793811.332608%
B82771151.389392%
C82783764.542160%
D8277256831.025734%

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 8277 8277 673 673 8.13% 8.13%
B 8277 8277 49 49 0.59% 0.59%
C 8278 8278 252 252 3.04% 3.04%
D 8276 8276 2246 2246 27.14% 27.14%

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 7 29 1925950 9244.36 830 809 208.3
A 15 174 452797 2170.41 830 809 208.3
A 0 8 422889 2026.79 830 809 208.3
B 4 171 215599 1151.3 875 843 186.5
B 5 185 137400 732.08 875 843 186.5
B 4 216 93437 496.39 875 843 186.5
C 10 171 1053826 4556.32 841 832 231.1
C 15 177 796319 3442.08 841 832 231.1
C 12 252 123971 532.82 841 832 231.1
D 8 176 6439127 30619.0 732 700 210.3
D 2 165 1165633 5540.03 732 700 210.3
D 7 62 269433 1278.0 732 700 210.3

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