ASTROSAT CZTI

Data Quality Report

Orbit 13913

Creation date: 2024-06-27T16:47:49.475766
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/AS1A04_012T02_9000002050_13913cztM0_level2.evt modeM0/AS1A04_012T02_9000002050_13913cztM0_level2_quad_clean.evt
Size (bytes)539,081,28090,408,960
Size514.1 MB 86.2 MB
Events in quadrant A3,556,778563,065
Events in quadrant B3,507,406572,201
Events in quadrant C3,340,091567,443
Events in quadrant D5,435,475535,684

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153903
B0152652
C0146972
D0210332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7177630.877804%
B7177650.905671%
C7177130.181134%
D71772343.260415%

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 7693 7179 47 47 0.61% 0.65%
B 7693 7179 7 7 0.09% 0.10%
C 7693 7179 0 0 0.00% 0.00%
D 7693 7178 194 194 2.52% 2.70%

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 9 143 247850 1420.22 847 827 173.9
A 8 15 36570 205.5 847 827 173.9
A 1 162 11831 63.27 847 827 173.9
B 4 142 95382 574.9 849 825 164.5
B 4 80 36160 214.83 849 825 164.5
B 0 219 28287 166.97 849 825 164.5
C 3 233 104085 532.17 830 833 194.0
C 13 61 6027 26.77 830 833 194.0
C 0 207 2094 6.5 830 833 194.0
D 13 122 1432844 7418.36 810 792 193.0
D 1 52 555624 2874.16 810 792 193.0
D 5 222 177922 917.57 810 792 193.0

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