ASTROSAT CZTI

Data Quality Report

Orbit 28504

Creation date: 2024-06-27T19:52:27.133551
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/AS1A10_110T05_9000004098_28504cztM0_level2.evt modeM0/AS1A10_110T05_9000004098_28504cztM0_level2_quad_clean.evt
Size (bytes)572,276,160117,679,680
Size545.8 MB 112.2 MB
Events in quadrant A3,245,872785,801
Events in quadrant B3,465,662802,997
Events in quadrant C3,345,285778,319
Events in quadrant D6,810,046719,397

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141762
B0147792
C0143122
D0250272

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6848350.511098%
B6847701.022346%
C68471091.591938%
D6847117817.204615%

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 7648 6849 1 1 0.01% 0.01%
B 7647 6848 4 4 0.05% 0.06%
C 7647 6848 0 0 0.00% 0.00%
D 7647 6847 1028 1028 13.44% 15.01%

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 13 254 12870 73.09 831 814 165.0
A 12 96 11934 67.41 831 814 165.0
A 8 192 10209 56.95 831 814 165.0
B 5 255 106567 682.16 832 813 155.0
B 0 230 70421 449.0 832 813 155.0
B 12 111 18681 115.26 832 813 155.0
C 14 238 132598 705.06 809 815 186.9
C 3 233 33374 174.2 809 815 186.9
C 7 247 10294 50.71 809 815 186.9
D 8 195 2336053 12707.83 774 754 183.8
D 1 52 1310728 7128.39 774 754 183.8
D 2 250 60308 324.07 774 754 183.8

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