ASTROSAT CZTI

Data Quality Report

Orbit 34945

Creation date: 2022-03-16T06:51:05.845920
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/AS1A11_069T01_9000005008_34945cztM0_level2.evt modeM0/AS1A11_069T01_9000005008_34945cztM0_level2_quad_clean.evt
Size (bytes)111,372,48014,287,680
Size106.2 MB 13.6 MB
Events in quadrant A1,364,92660,914
Events in quadrant B564,937109,847
Events in quadrant C588,290102,532
Events in quadrant D799,69897,400

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A045441
B021571
C022151
D029031

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76847661.979167%
B768486.250000%
C768607.812500%
D768739.505208%

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 767 767 470 470 61.28% 61.28%
B 768 768 35 35 4.56% 4.56%
C 768 768 46 46 5.99% 5.99%
D 768 768 71 71 9.24% 9.24%

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 15 169 1130757 87542.58 55 54 12.9
A 10 83 14870 1147.1 55 54 12.9
A 13 6 2490 188.6 55 54 12.9
B 5 172 183656 9520.88 91 89 19.3
B 4 232 7970 408.76 91 89 19.3
B 0 190 5645 288.17 91 89 19.3
C 0 10 194552 8728.02 87 88 22.3
C 15 214 34634 1550.51 87 88 22.3
C 12 250 15587 695.63 87 88 22.3
D 13 249 99212 4168.61 87 85 23.8
D 8 195 99097 4163.77 87 85 23.8
D 2 31 90609 3806.82 87 85 23.8

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