ASTROSAT CZTI

Data Quality Report

Orbit 55946

Creation date: 2026-01-30T14:35:11.210122
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_066T02_9000006546_55946cztM0_level2.fits modeM0/AS1A14_066T02_9000006546_55946cztM0_level2_quad_clean.evt
Size (bytes)463,510,080114,206,400
Size442.0 MB 108.9 MB
Events in quadrant A4,156,268736,591
Events in quadrant B3,612,018790,839
Events in quadrant C3,889,950705,698
Events in quadrant D4,873,494665,148

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182020
B0168430
C0178160
D0202120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8049780.969064%
B8049881.093304%
C80491271.577836%
D80501411.751553%

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 8049 8049 53 53 0.66% 0.66%
B 8049 8049 15 15 0.19% 0.19%
C 8049 8049 84 84 1.04% 1.04%
D 8050 8050 118 118 1.47% 1.47%

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 506209 2380.69 856 835 212.3
A 7 64 218541 1025.56 856 835 212.3
A 5 16 44574 206.04 856 835 212.3
B 10 59 48246 258.77 851 819 183.3
B 7 252 35908 191.45 851 819 183.3
B 0 199 26047 137.64 851 819 183.3
C 12 252 280980 1230.45 832 825 227.7
C 13 3 95248 414.71 832 825 227.7
C 1 109 86307 375.44 832 825 227.7
D 11 129 914042 3944.34 825 790 231.5
D 7 129 145656 625.68 825 790 231.5
D 1 31 109251 468.44 825 790 231.5

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