ASTROSAT CZTI

Data Quality Report

Orbit 14811

Creation date: 2024-06-27T17:00:00.298158
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/AS1G08_010T02_9000002188_14811cztM0_level2.evt modeM0/AS1G08_010T02_9000002188_14811cztM0_level2_quad_clean.evt
Size (bytes)533,275,200104,803,200
Size508.6 MB 99.9 MB
Events in quadrant A3,737,170682,589
Events in quadrant B3,887,622673,356
Events in quadrant C3,978,738661,130
Events in quadrant D4,042,388639,540

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159123
B0162962
C0163102
D0173532

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7434710.955071%
B74341441.937046%
C7434390.524617%
D74341982.663438%

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 7770 7436 5 5 0.06% 0.07%
B 7770 7436 35 35 0.45% 0.47%
C 7770 7436 7 7 0.09% 0.09%
D 7770 7436 127 127 1.63% 1.71%

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 12 189 136873 729.27 910 891 186.5
A 4 2 82677 438.62 910 891 186.5
A 14 237 11135 54.94 910 891 186.5
B 4 173 116172 667.79 900 880 172.6
B 3 64 105976 608.74 900 880 172.6
B 0 219 28505 160.01 900 880 172.6
C 3 233 521185 2550.76 872 877 204.0
C 0 207 53731 259.11 872 877 204.0
C 13 61 6221 26.2 872 877 204.0
D 7 254 345306 1512.31 861 840 227.8
D 10 70 229687 1004.7 861 840 227.8
D 13 249 90405 393.22 861 840 227.8

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