ASTROSAT CZTI

Data Quality Report

Orbit 20718

Creation date: 2024-06-27T18:18:44.483916
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_165T07_9000003062_20718cztM0_level2.evt modeM0/AS1A05_165T07_9000003062_20718cztM0_level2_quad_clean.evt
Size (bytes)563,814,720100,509,120
Size537.7 MB 95.9 MB
Events in quadrant A3,535,267660,391
Events in quadrant B3,748,053651,902
Events in quadrant C3,497,103628,563
Events in quadrant D5,789,752584,806

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154772
B0161072
C0153052
D0224462

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7447580.778837%
B74471251.678528%
C7447841.127971%
D74476528.755203%

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 7792 7448 0 0 0.00% 0.00%
B 7792 7448 30 30 0.39% 0.40%
C 7792 7448 0 0 0.00% 0.00%
D 7792 7448 473 473 6.07% 6.35%

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 10 253 35782 190.76 899 883 182.9
A 5 16 27546 145.74 899 883 182.9
A 0 226 7938 38.56 899 883 182.9
B 7 220 185759 1089.66 885 866 169.7
B 0 190 38226 220.18 885 866 169.7
B 12 111 20314 114.62 885 866 169.7
C 14 238 131780 660.37 844 849 198.3
C 7 247 35639 175.47 844 849 198.3
C 8 208 28177 137.83 844 849 198.3
D 1 52 1817498 9015.41 827 803 201.5
D 5 222 325612 1611.88 827 803 201.5
D 7 38 268917 1330.52 827 803 201.5

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