ASTROSAT CZTI

Data Quality Report

Orbit 13947

Creation date: 2024-06-27T16:48:18.567886
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/AS1A04_026T04_9000002060_13947cztM0_level2.evt modeM0/AS1A04_026T04_9000002060_13947cztM0_level2_quad_clean.evt
Size (bytes)661,325,760164,491,200
Size630.7 MB 156.9 MB
Events in quadrant A4,173,1971,099,882
Events in quadrant B4,981,4071,103,034
Events in quadrant C4,058,1801,097,256
Events in quadrant D6,192,5831,044,383

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01860
B01860
C01860
D01860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187662
B0210031
C0185891
D0247031

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9195480.522023%
B91951631.772703%
C9195140.152257%
D91951371.489940%

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 9866 9197 5 5 0.05% 0.05%
B 9866 9197 67 67 0.68% 0.73%
C 9866 9197 1 1 0.01% 0.01%
D 9866 9197 108 108 1.09% 1.17%

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 100752 477.2 1031 1007 209.0
A 1 162 39602 184.64 1031 1007 209.0
A 14 111 25694 118.11 1031 1007 209.0
B 10 245 505293 2600.89 1028 1000 193.9
B 0 189 152878 783.31 1028 1000 193.9
B 3 64 79883 406.84 1028 1000 193.9
C 3 233 100003 428.01 1009 1013 231.3
C 0 207 16106 65.26 1009 1013 231.3
C 13 61 7258 27.0 1009 1013 231.3
D 12 110 1163828 4829.17 999 973 240.8
D 13 122 587110 2434.14 999 973 240.8
D 13 189 149077 615.05 999 973 240.8

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