ASTROSAT CZTI

Data Quality Report

Orbit 13261

Creation date: 2024-06-27T16:38:30.423628
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/AS1G08_077T01_9000001970_13261cztM0_level2.evt modeM0/AS1G08_077T01_9000001970_13261cztM0_level2_quad_clean.evt
Size (bytes)488,370,240101,154,240
Size465.7 MB 96.5 MB
Events in quadrant A3,196,363643,558
Events in quadrant B4,938,259631,302
Events in quadrant C3,148,463667,231
Events in quadrant D3,036,023638,230

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143933
B0195292
C0141732
D0142122

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6927290.418652%
B692779711.505702%
C6927150.216544%
D6927120.173235%

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 7683 6930 8 8 0.10% 0.12%
B 7683 6929 526 526 6.85% 7.59%
C 7683 6929 0 0 0.00% 0.00%
D 7683 6930 1 1 0.01% 0.01%

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 15 239 93398 579.04 788 770 160.0
A 12 96 31013 189.05 788 770 160.0
A 13 248 17696 105.81 788 770 160.0
B 4 239 2000585 14142.6 745 724 141.4
B 12 111 16375 110.68 745 724 141.4
B 0 230 15427 103.98 745 724 141.4
C 3 233 75155 413.18 783 786 180.0
C 14 234 7760 38.75 783 786 180.0
C 15 208 6002 28.98 783 786 180.0
D 8 195 77340 413.11 769 745 185.4
D 13 122 29525 155.22 769 745 185.4
D 2 234 23285 121.57 769 745 185.4

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