ASTROSAT CZTI

Data Quality Report

Orbit 20190922_T03_138T03_9000003178_level2

Creation date: 2025-12-03T19:25:08.468938
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/AS1T03_138T03_9000003178cztM0_level2.fits modeM0/AS1T03_138T03_9000003178cztM0_level2_quad_clean.evt
Size (bytes)153,126,72068,973,120
Size146.0 MB 65.8 MB
Events in quadrant A981,942292,302
Events in quadrant B945,042297,639
Events in quadrant C932,472271,815
Events in quadrant D801,560247,744

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02900
B02900
C02900
D02900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0297050
B0305010
C0297500
D0339750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14146440.311042%
B14146550.388802%
C141461080.763467%
D141463062.163156%

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 17936 14146 0 0 0.00% 0.00%
B 17936 14146 0 0 0.00% 0.00%
C 17936 14146 0 0 0.00% 0.00%
D 17936 14144 0 0 0.00% 0.00%

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 0 29 907 10.52 255 241 63.3
A 7 110 756 8.13 255 241 63.3
A 0 30 716 7.5 255 241 63.3
B 2 9 745 9.91 250 239 51.1
B 5 128 598 7.03 250 239 51.1
B 2 8 591 6.89 250 239 51.1
C 1 81 676 6.85 246 231 65.0
C 1 80 675 6.83 246 231 65.0
C 9 188 647 6.4 246 231 65.0
D 6 231 617 6.63 229 210 61.4
D 10 189 573 5.91 229 210 61.4
D 7 3 567 5.81 229 210 61.4

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