ASTROSAT CZTI

Data Quality Report

Orbit 20382

Creation date: 2024-06-27T18:14:40.930969
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/AS1A05_205T01_9000003012_20382cztM0_level2.evt modeM0/AS1A05_205T01_9000003012_20382cztM0_level2_quad_clean.evt
Size (bytes)451,586,88081,711,360
Size430.7 MB 77.9 MB
Events in quadrant A3,226,123505,422
Events in quadrant B3,356,951520,961
Events in quadrant C3,252,487502,291
Events in quadrant D3,391,318484,469

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137333
B0139322
C0135742
D0144114

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6614360.544300%
B6615420.634921%
C6615640.967498%
D6614440.665256%

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 7710 6616 6 6 0.08% 0.09%
B 7710 6616 5 5 0.06% 0.08%
C 7710 6616 0 0 0.00% 0.00%
D 7710 6616 22 22 0.29% 0.33%

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 5 16 29457 175.37 819 803 163.4
A 12 96 22426 132.34 819 803 163.4
A 6 16 14931 86.47 819 803 163.4
B 7 220 31874 197.68 827 807 157.2
B 3 64 31149 193.06 827 807 157.2
B 12 111 18722 113.99 827 807 157.2
C 14 238 125531 672.4 799 803 185.5
C 13 61 5651 26.14 799 803 185.5
C 3 233 5427 24.93 799 803 185.5
D 1 52 272972 1382.45 803 779 196.9
D 13 153 35053 174.07 803 779 196.9
D 2 234 27987 138.19 803 779 196.9

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