ASTROSAT CZTI

Data Quality Report

Orbit 18692

Creation date: 2024-06-27T17:53:29.468846
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/AS1A05_072T04_9000002794_18692cztM0_level2.evt modeM0/AS1A05_072T04_9000002794_18692cztM0_level2_quad_clean.evt
Size (bytes)564,246,720106,770,240
Size538.1 MB 101.8 MB
Events in quadrant A3,564,484682,136
Events in quadrant B3,705,477698,050
Events in quadrant C3,904,413676,743
Events in quadrant D5,398,622648,130

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158542
B0162052
C0167102
D0213852

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7592570.750790%
B7593961.264322%
C75932062.713025%
D75934445.847491%

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 7942 7593 2 2 0.03% 0.03%
B 7943 7594 2 2 0.03% 0.03%
C 7943 7594 31 31 0.39% 0.41%
D 7943 7594 344 344 4.33% 4.53%

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 6 16 39029 207.16 907 888 184.1
A 9 143 20818 108.25 907 888 184.1
A 13 254 10840 54.05 907 888 184.1
B 7 220 38599 214.78 911 887 175.6
B 15 222 24310 133.4 911 887 175.6
B 12 111 21381 116.72 911 887 175.6
C 9 54 266591 1284.8 876 882 206.8
C 14 238 135562 651.23 876 882 206.8
C 5 112 62014 295.59 876 882 206.8
D 1 52 1677336 7791.94 871 843 215.2
D 7 238 345334 1601.11 871 843 215.2
D 12 110 34087 154.51 871 843 215.2

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