ASTROSAT CZTI

Data Quality Report

Orbit 20230112_A12_077T06_9000005474_level2

Creation date: 2023-01-17T11:25:07.039548
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/AS1A12_077T06_9000005474cztM0_level2.fits modeM0/AS1A12_077T06_9000005474cztM0_level2_quad_clean.evt
Size (bytes)971,167,6801,073,111,040
Size926.2 MB 1023.4 MB
Events in quadrant A5,813,3966,567,329
Events in quadrant B5,831,0886,921,697
Events in quadrant C5,749,9006,221,912
Events in quadrant D4,267,4685,059,945

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03806040
B02476000
C03303670
D04539890

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023060
B023060
C023060
D023060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04240
B04240
C04240
D04240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11281186967.708468%
B11281114941.324339%
C11281175816.720089%
D1126572938426.082711%

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 155141 112748 0 0 0.00% 0.00%
B 155141 112802 0 0 0.00% 0.00%
C 155141 112729 0 0 0.00% 0.00%
D 155141 110652 0 0 0.00% 0.00%

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 7 110 4811 8.95 1516 1420 378.9
A 9 19 4715 8.7 1516 1420 378.9
A 0 29 4638 8.49 1516 1420 378.9
B 2 9 5007 11.84 1542 1469 298.8
B 3 80 4676 10.73 1542 1469 298.8
B 5 128 4071 8.71 1542 1469 298.8
C 1 81 4643 8.3 1521 1422 388.2
C 1 80 4526 8.0 1521 1422 388.2
C 3 203 4452 7.81 1521 1422 388.2
D 7 3 3137 6.18 1220 1106 328.5
D 4 160 3125 6.15 1220 1106 328.5
D 10 113 3114 6.11 1220 1106 328.5

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