ASTROSAT CZTI

Data Quality Report

Orbit 13661

Creation date: 2024-06-27T16:44:12.855751
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_075T01_9000002024_13661cztM0_level2.evt modeM0/AS1G08_075T01_9000002024_13661cztM0_level2_quad_clean.evt
Size (bytes)583,704,000138,772,800
Size556.7 MB 132.3 MB
Events in quadrant A4,794,343880,687
Events in quadrant B3,906,026900,537
Events in quadrant C3,896,330957,137
Events in quadrant D4,535,369905,658

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197251
B0171561
C0167171
D0189011

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80482473.069085%
B8048680.844930%
C8048320.397614%
D8048560.695825%

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 9109 8050 207 207 2.27% 2.57%
B 9109 8050 15 15 0.16% 0.19%
C 9109 8050 0 0 0.00% 0.00%
D 9109 8050 34 34 0.37% 0.42%

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 9 143 1194143 6335.86 923 904 188.3
A 15 69 32028 165.26 923 904 188.3
A 0 226 8254 39.03 923 904 188.3
B 0 219 104301 583.7 935 913 177.1
B 3 64 38070 209.78 935 913 177.1
B 0 244 35456 195.02 935 913 177.1
C 3 233 284584 1314.38 926 933 215.8
C 13 61 6698 26.71 926 933 215.8
C 14 234 2230 6.01 926 933 215.8
D 5 222 686413 3099.93 915 892 221.1
D 8 195 233808 1053.25 915 892 221.1
D 13 122 61770 275.29 915 892 221.1

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