ASTROSAT CZTI

Data Quality Report

Orbit 10856

Creation date: 2024-06-27T16:04:35.085041
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/AS1A03_086T01_9000001568_10856cztM0_level2.evt modeM0/AS1A03_086T01_9000001568_10856cztM0_level2_quad_clean.evt
Size (bytes)609,747,84070,266,240
Size581.5 MB 67.0 MB
Events in quadrant A5,256,387419,359
Events in quadrant B4,729,067420,418
Events in quadrant C3,306,814431,034
Events in quadrant D4,735,040403,841

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205923
B0181842
C0136682
D0184432

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64954496.913010%
B64954456.851424%
C6495871.339492%
D64951973.033102%

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 7740 6496 209 209 2.70% 3.22%
B 7740 6496 230 230 2.97% 3.54%
C 7740 6496 1 1 0.01% 0.02%
D 7740 6495 84 84 1.09% 1.29%

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 8 5 1394976 8185.37 847 834 170.3
A 15 223 283155 1657.58 847 834 170.3
A 8 15 127915 746.13 847 834 170.3
B 4 239 1162840 7325.11 846 829 158.6
B 3 189 76865 479.32 846 829 158.6
B 0 219 62499 388.76 846 829 158.6
C 14 234 10137 47.67 844 852 194.8
C 14 67 7353 33.38 844 852 194.8
C 13 61 6484 28.92 844 852 194.8
D 13 152 783153 3854.44 838 814 203.0
D 1 52 252147 1238.27 838 814 203.0
D 13 104 141727 694.25 838 814 203.0

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