ASTROSAT CZTI

Data Quality Report

Orbit 11549

Creation date: 2024-06-27T16:14:35.010481
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/AS1G08_009T01_9000001692_11549cztM0_level2.evt modeM0/AS1G08_009T01_9000001692_11549cztM0_level2_quad_clean.evt
Size (bytes)684,227,52073,592,640
Size652.5 MB 70.2 MB
Events in quadrant A5,472,749457,288
Events in quadrant B5,042,964448,139
Events in quadrant C3,338,179449,891
Events in quadrant D6,425,391416,167

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210403
B0193372
C0138502
D0233922

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65443625.531785%
B65445217.961491%
C6544620.947433%
D6544129019.712714%

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 7805 6546 135 135 1.73% 2.06%
B 7805 6546 276 276 3.54% 4.22%
C 7805 6546 0 0 0.00% 0.00%
D 7805 6546 952 952 12.20% 14.54%

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 5 1613890 9175.33 875 861 175.8
A 1 162 160491 908.02 875 861 175.8
A 1 178 94448 532.35 875 861 175.8
B 4 239 962892 5975.36 859 844 161.0
B 3 64 484085 3001.45 859 844 161.0
B 11 51 126393 779.8 859 844 161.0
C 13 61 6252 27.66 854 863 194.8
C 7 159 5071 21.6 854 863 194.8
C 13 250 2751 9.69 854 863 194.8
D 13 137 2795163 14512.79 799 781 192.5
D 1 52 305586 1583.02 799 781 192.5
D 2 120 149730 773.58 799 781 192.5

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