ASTROSAT CZTI

Data Quality Report

Orbit 28916

Creation date: 2024-06-27T19:58:11.664906
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_064T02_9000004146_28916cztM0_level2.evt modeM0/AS1A10_064T02_9000004146_28916cztM0_level2_quad_clean.evt
Size (bytes)620,377,92091,535,040
Size591.6 MB 87.3 MB
Events in quadrant A3,461,605578,494
Events in quadrant B3,526,768592,223
Events in quadrant C5,774,739561,560
Events in quadrant D5,548,038548,819

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148592
B0150532
C0219622
D0214703

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7046650.922509%
B7046921.305705%
C704671110.090832%
D70462753.902924%

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 8886 7048 0 0 0.00% 0.00%
B 8886 7048 5 5 0.06% 0.07%
C 8886 7048 181 181 2.04% 2.57%
D 8886 7048 191 191 2.15% 2.71%

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 15 169 37389 205.63 885 866 177.6
A 13 254 13883 73.29 885 866 177.6
A 3 137 8773 44.52 885 866 177.6
B 10 245 44572 257.02 884 861 170.1
B 12 111 20884 117.73 884 861 170.1
B 11 111 18847 105.76 884 861 170.1
C 3 233 2272373 11497.17 841 846 197.6
C 14 238 137842 693.4 841 846 197.6
C 15 208 53148 264.72 841 846 197.6
D 8 195 1785543 8692.6 857 833 205.3
D 1 52 407289 1979.68 857 833 205.3
D 12 233 58746 282.07 857 833 205.3

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