ASTROSAT CZTI

Data Quality Report

Orbit 28174

Creation date: 2024-06-27T19:48:51.684651
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/AS1A10_073T05_9000004068_28174cztM0_level2.evt modeM0/AS1A10_073T05_9000004068_28174cztM0_level2_quad_clean.evt
Size (bytes)588,418,56080,709,120
Size561.2 MB 77.0 MB
Events in quadrant A3,263,043509,836
Events in quadrant B4,436,276498,003
Events in quadrant C3,493,923479,645
Events in quadrant D6,154,938471,247

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141990
B0177390
C0147710
D0231140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6962811.163459%
B69632493.576045%
C69631542.211690%
D696379711.446216%

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 7347 6962 0 0 0.00% 0.00%
B 7348 6963 107 107 1.46% 1.54%
C 7348 6963 9 9 0.12% 0.13%
D 7348 6963 612 612 8.33% 8.79%

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 11219 61.17 841 821 170.0
A 3 137 8223 43.54 841 821 170.0
A 0 226 7179 37.4 841 821 170.0
B 10 245 980343 6220.46 819 797 157.5
B 10 246 105209 663.05 819 797 157.5
B 15 32 80592 506.73 819 797 157.5
C 3 233 167224 894.92 794 798 186.0
C 14 238 127726 682.53 794 798 186.0
C 15 208 101488 541.44 794 798 186.0
D 1 52 1685082 9061.07 781 760 185.9
D 13 104 491985 2642.62 781 760 185.9
D 2 250 484658 2603.2 781 760 185.9

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