ASTROSAT CZTI

Data Quality Report

Orbit 28125

Creation date: 2024-06-27T19:48:21.254334
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/AS1A10_090T14_9000004064_28125cztM0_level2.evt modeM0/AS1A10_090T14_9000004064_28125cztM0_level2_quad_clean.evt
Size (bytes)506,229,12085,305,600
Size482.8 MB 81.4 MB
Events in quadrant A3,582,839556,369
Events in quadrant B3,407,021566,184
Events in quadrant C3,360,559524,951
Events in quadrant D4,563,998506,421

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143100
B0138210
C0136870
D0176590

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61501772.878049%
B61501041.691057%
C61511272.064705%
D61512053.332791%

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 7465 6150 82 82 1.10% 1.33%
B 7465 6150 2 2 0.03% 0.03%
C 7466 6151 16 16 0.21% 0.26%
D 7466 6151 124 124 1.66% 2.02%

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 15 174 263039 1560.42 860 847 168.0
A 13 254 8796 47.31 860 847 168.0
A 3 137 7494 39.56 860 847 168.0
B 10 245 22862 139.4 855 839 158.0
B 12 111 18680 112.93 855 839 158.0
B 11 111 17046 102.59 855 839 158.0
C 14 238 132921 703.62 805 812 187.8
C 2 16 67887 357.25 805 812 187.8
C 3 233 20125 102.86 805 812 187.8
D 1 52 564902 2966.16 810 791 190.2
D 12 79 551762 2897.07 810 791 190.2
D 7 223 118058 616.6 810 791 190.2

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