ASTROSAT CZTI

Data Quality Report

Orbit 20220708_A11_049T04_9000005230_level2

Creation date: 2022-07-11T13:11:50.721808
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/AS1A11_049T04_9000005230cztM0_level2_bc.evt modeM0/AS1A11_049T04_9000005230cztM0_level2_quad_clean.evt
Size (bytes)2,460,044,160677,632,320
Size2.3 GB 646.2 MB
Events in quadrant A13,300,3014,344,303
Events in quadrant B14,500,1854,303,557
Events in quadrant C17,288,9484,198,167
Events in quadrant D25,672,4643,906,639

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01153540
B01213390
C01285400
D01653090

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02010
B02010
C02010
D02010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011220
B011220
C011220
D011220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A549711280.232850%
B549716611.202452%
C5497113702.492223%
D5497135426.443397%

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 75017 54983 14 14 0.02% 0.03%
B 75017 54972 114 114 0.15% 0.21%
C 75017 54971 311 311 0.41% 0.57%
D 75017 54970 581 581 0.77% 1.06%

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 10 83 1640157 2542.87 2895 2851 643.9
A 9 143 275559 423.54 2895 2851 643.9
A 13 6 99377 149.91 2895 2851 643.9
B 0 190 1300181 2275.41 2887 2831 570.2
B 5 255 771479 1348.12 2887 2831 570.2
B 0 221 353853 615.65 2887 2831 570.2
C 0 10 2192604 3494.16 2763 2743 626.7
C 15 214 2175074 3466.19 2763 2743 626.7
C 14 254 1332090 2121.12 2763 2743 626.7
D 12 235 8689764 13262.23 2763 2680 655.0
D 12 6 1249014 1902.73 2763 2680 655.0
D 2 153 836219 1272.53 2763 2680 655.0

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter