ASTROSAT CZTI

Data Quality Report

Orbit 23822

Creation date: 2024-06-27T18:59:05.626610
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/AS1A07_113T01_9000003526_23822cztM0_level2.evt modeM0/AS1A07_113T01_9000003526_23822cztM0_level2_quad_clean.evt
Size (bytes)916,110,72071,870,400
Size873.7 MB 68.5 MB
Events in quadrant A3,430,673485,158
Events in quadrant B4,173,302483,348
Events in quadrant C3,481,373479,909
Events in quadrant D16,203,463256,488

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144202
B0166482
C0144242
D0527202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6742580.860279%
B67422473.663601%
C6742901.334915%
D6742624392.598635%

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 7836 6741 0 0 0.00% 0.00%
B 7836 6741 111 111 1.42% 1.65%
C 7836 6741 0 0 0.00% 0.00%
D 7836 6741 6030 6030 76.95% 89.45%

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 11777 61.9 888 871 176.2
A 0 226 7744 39.01 888 871 176.2
A 3 137 7413 37.13 888 871 176.2
B 3 64 681237 4120.76 871 851 165.1
B 15 33 48372 287.81 871 851 165.1
B 12 111 19671 113.98 871 851 165.1
C 14 238 136406 681.47 853 858 198.9
C 0 10 6797 29.86 853 858 198.9
C 7 247 6458 28.15 853 858 198.9
D 13 174 10853771 91523.36 486 473 118.6
D 8 195 2864952 24155.49 486 473 118.6
D 1 52 588844 4961.6 486 473 118.6

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