ASTROSAT CZTI

Data Quality Report

Orbit 03910

Creation date: 2024-06-27T14:35:08.301438
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_172T01_9000000502_03910cztM0_level2.evt modeM0/AS1G05_172T01_9000000502_03910cztM0_level2_quad_clean.evt
Size (bytes)454,351,68079,430,400
Size433.3 MB 75.8 MB
Events in quadrant A3,306,947489,431
Events in quadrant B3,377,445492,963
Events in quadrant C3,164,971487,755
Events in quadrant D3,452,235465,292

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143313
B0142022
C0142022
D0152222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67351271.885672%
B67351482.197476%
C67351552.301411%
D67352283.385301%

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 7660 6736 12 12 0.16% 0.18%
B 7660 6736 24 24 0.31% 0.36%
C 7660 6736 30 30 0.39% 0.45%
D 7660 6736 127 127 1.66% 1.89%

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 94046 576.31 790 774 161.8
A 2 79 80908 495.13 790 774 161.8
A 0 118 54939 334.67 790 774 161.8
B 15 204 188648 1220.83 796 777 153.9
B 7 221 82573 531.53 796 777 153.9
B 15 85 19305 120.4 796 777 153.9
C 1 16 114540 639.77 769 774 177.8
C 10 65 29937 164.0 769 774 177.8
C 9 247 11048 57.78 769 774 177.8
D 2 32 327771 1796.59 759 738 182.0
D 13 239 100300 546.95 759 738 182.0
D 13 248 65166 353.94 759 738 182.0

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