ASTROSAT CZTI

Data Quality Report

Orbit 03864

Creation date: 2024-06-27T14:34:31.967136
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/AS1G05_189T01_9000000492_03864cztM0_level2.evt modeM0/AS1G05_189T01_9000000492_03864cztM0_level2_quad_clean.evt
Size (bytes)378,135,36066,870,720
Size360.6 MB 63.8 MB
Events in quadrant A2,762,618415,953
Events in quadrant B2,773,674419,893
Events in quadrant C2,974,460401,468
Events in quadrant D2,559,064394,749

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118082
B0116721
C0125091
D0117151

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5605671.195361%
B5605731.302409%
C56051071.909010%
D5605510.909902%

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 6891 5605 0 0 0.00% 0.00%
B 6891 5605 1 1 0.01% 0.02%
C 6891 5605 35 35 0.51% 0.62%
D 6891 5605 10 10 0.15% 0.18%

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 8 15 74118 526.91 687 674 139.4
A 15 234 27214 190.41 687 674 139.4
A 15 174 12088 81.89 687 674 139.4
B 15 204 71180 528.6 691 678 133.4
B 14 167 21594 156.82 691 678 133.4
B 12 111 11986 84.78 691 678 133.4
C 2 53 403961 2639.92 653 658 152.8
C 14 67 7382 44.01 653 658 152.8
C 9 247 7088 42.09 653 658 152.8
D 2 206 40483 252.63 655 640 157.7
D 13 248 34098 212.14 655 640 157.7
D 7 223 17559 107.28 655 640 157.7

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
Veto Counter