ASTROSAT CZTI

Data Quality Report

Orbit 31890

Creation date: 2024-06-27T20:33:53.408183
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/AS1T04_042T01_9000004650_31890cztM0_level2.evt modeM0/AS1T04_042T01_9000004650_31890cztM0_level2_quad_clean.evt
Size (bytes)562,982,40087,595,200
Size536.9 MB 83.5 MB
Events in quadrant A2,858,783606,607
Events in quadrant B4,422,019590,130
Events in quadrant C4,242,003516,859
Events in quadrant D5,145,681544,431

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119141
B0171701
C0161851
D0192221

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5633921.633233%
B56341632.893149%
C563470712.548811%
D56343756.656017%

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 6843 5634 0 0 0.00% 0.00%
B 6844 5635 0 0 0.00% 0.00%
C 6844 5635 536 536 7.83% 9.51%
D 6844 5635 323 323 4.72% 5.73%

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 13 254 8710 54.44 740 726 146.7
A 3 137 7075 43.29 740 726 146.7
A 0 226 6413 38.78 740 726 146.7
B 6 159 1560446 11500.44 719 704 135.6
B 12 111 15897 112.02 719 704 135.6
B 5 172 15831 111.54 719 704 135.6
C 0 239 1425804 9473.48 649 652 150.4
C 14 238 107529 710.45 649 652 150.4
C 0 10 89422 590.09 649 652 150.4
D 8 195 1266195 7613.87 698 680 166.2
D 12 79 1078446 6484.3 698 680 166.2
D 12 33 77236 460.59 698 680 166.2

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