ASTROSAT CZTI

Data Quality Report

Orbit 34720

Creation date: 2022-03-02T17:19:44.437581
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/AS1C07_001T01_9000004982_34720cztM0_level2.evt modeM0/AS1C07_001T01_9000004982_34720cztM0_level2_quad_clean.evt
Size (bytes)1,338,857,280266,811,840
Size1.2 GB 254.5 MB
Events in quadrant A9,197,7591,770,419
Events in quadrant B8,590,2981,773,875
Events in quadrant C7,840,7261,793,138
Events in quadrant D13,869,5051,670,010

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0378214
B0358033
C0325943
D0523213

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0510

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A155713202.055102%
B155713342.145013%
C15571980.629375%
D155718815.657954%

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 19779 15574 172 172 0.87% 1.10%
B 19779 15574 242 242 1.22% 1.55%
C 19779 15574 61 61 0.31% 0.39%
D 19779 15574 799 799 4.04% 5.13%

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 2027914 5789.67 1758 1725 350.0
A 9 143 166795 471.67 1758 1725 350.0
A 10 83 110798 311.67 1758 1725 350.0
B 5 172 977793 2945.48 1755 1710 331.4
B 4 171 215284 644.49 1755 1710 331.4
B 4 232 137429 409.55 1755 1710 331.4
C 15 214 652909 1634.8 1733 1743 398.3
C 0 10 271793 677.98 1733 1743 398.3
C 14 67 103499 255.47 1733 1743 398.3
D 8 195 2614749 5915.4 1688 1652 441.7
D 2 250 1839699 4160.88 1688 1652 441.7
D 1 20 812372 1835.27 1688 1652 441.7

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