ASTROSAT CZTI

Data Quality Report

Orbit 16022

Creation date: 2024-06-27T17:16:54.172026
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/AS1T02_091T01_9000002368_16022cztM0_level2.evt modeM0/AS1T02_091T01_9000002368_16022cztM0_level2_quad_clean.evt
Size (bytes)468,403,20066,340,800
Size446.7 MB 63.3 MB
Events in quadrant A3,391,648402,244
Events in quadrant B3,664,054402,613
Events in quadrant C3,437,584389,409
Events in quadrant D3,273,623383,564

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138592
B0147441
C0139501
D0135111

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61671011.637749%
B61671462.367440%
C61671141.848549%
D6167811.313443%

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 7448 6168 3 3 0.04% 0.05%
B 7448 6168 45 45 0.60% 0.73%
C 7448 6168 0 0 0.00% 0.00%
D 7448 6168 0 0 0.00% 0.00%

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 12 96 32631 182.88 869 856 173.7
A 3 80 8747 45.42 869 856 173.7
A 15 239 7905 40.57 869 856 173.7
B 5 172 99928 624.12 856 841 158.8
B 7 220 79434 495.04 856 841 158.8
B 4 173 30382 186.07 856 841 158.8
C 14 238 130519 673.4 831 840 192.6
C 3 233 50897 259.94 831 840 192.6
C 10 22 15332 75.25 831 840 192.6
D 2 152 37892 180.26 850 829 205.6
D 2 234 28394 134.06 850 829 205.6
D 2 120 13499 61.62 850 829 205.6

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