ASTROSAT CZTI

Data Quality Report

Orbit 20210224_A10_115T01_9000004206_level2

Creation date: 2021-02-25T11:01:47.842004
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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_115T01_9000004206cztM0_level2_bc.evt modeM0/AS1A10_115T01_9000004206cztM0_level2_quad_clean.evt
Size (bytes)2,337,145,920396,097,920
Size2.2 GB 377.7 MB
Events in quadrant A6,206,6172,865,159
Events in quadrant B8,847,9972,862,778
Events in quadrant C40,126,2841,912,824
Events in quadrant D13,818,4842,550,317

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05360
B05360
C05360
D05360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570
B0570
C0570
D0570

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0566620
B0674820
C01702710
D0878230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A261583941.506231%
B261589273.543849%
C261581794468.598517%
D26158266910.203379%

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 31923 26159 0 0 0.00% 0.00%
B 31923 26158 51 51 0.16% 0.19%
C 31923 26158 5716 5716 17.91% 21.85%
D 31923 26150 393 393 1.23% 1.50%

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 0 13 80735 235.87 1581 1557 335.7
A 13 254 55255 159.97 1581 1557 335.7
A 1 113 19439 53.27 1581 1557 335.7
B 10 245 1136004 3894.07 1576 1547 291.3
B 0 183 840031 2878.13 1576 1547 291.3
B 0 229 455929 1559.69 1576 1547 291.3
C 3 233 35717287 136562.86 1122 1127 261.5
C 14 254 65607 246.54 1122 1127 261.5
C 2 114 38542 143.06 1122 1127 261.5
D 1 52 4885023 15068.31 1475 1439 324.1
D 8 195 1933279 5960.7 1475 1439 324.1
D 7 80 585102 1800.89 1475 1439 324.1

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