ASTROSAT CZTI

Data Quality Report

Orbit 31904

Creation date: 2024-06-27T20:34:02.424694
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_123T09_9000004654_31904cztM0_level2.evt modeM0/AS1A10_123T09_9000004654_31904cztM0_level2_quad_clean.evt
Size (bytes)820,353,60086,198,400
Size782.4 MB 82.2 MB
Events in quadrant A3,019,205673,433
Events in quadrant B6,321,853602,348
Events in quadrant C3,661,301603,909
Events in quadrant D11,447,002319,567

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123571
B0227791
C0147291
D0379791

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5852931.589200%
B585276613.089542%
C58524046.903623%
D5852387466.199590%

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 7127 5853 0 0 0.00% 0.00%
B 7127 5853 588 588 8.25% 10.05%
C 7127 5853 20 20 0.28% 0.34%
D 7127 5853 3663 3663 51.40% 62.58%

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 12027 73.09 781 767 154.0
A 3 137 7018 40.58 781 767 154.0
A 0 226 6742 38.79 781 767 154.0
B 6 159 1608466 11857.36 727 711 135.6
B 5 172 969826 7147.32 727 711 135.6
B 15 222 431933 3180.31 727 711 135.6
C 3 233 349758 2096.98 723 732 166.4
C 14 238 184796 1105.88 723 732 166.4
C 0 10 168818 1009.88 723 732 166.4
D 12 33 8293755 68060.15 516 504 121.9
D 8 195 716099 5872.67 516 504 121.9
D 13 249 150110 1227.77 516 504 121.9

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