ASTROSAT CZTI

Data Quality Report

Orbit 45654

Creation date: 2024-06-27T23:14:38.260570
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/AS1A13_071T07_9000006116_45654cztM0_level2.fits modeM0/AS1A13_071T07_9000006116_45654cztM0_level2_quad_clean.evt
Size (bytes)583,018,560128,203,200
Size556.0 MB 122.3 MB
Events in quadrant A6,767,737861,976
Events in quadrant B4,171,931884,879
Events in quadrant C3,462,412843,443
Events in quadrant D6,556,056732,472

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256331
B0179291
C0164102
D0249451

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80421151.429993%
B8043811.007087%
C8042210.261129%
D80425687.062920%

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 8072 8043 4 4 0.05% 0.05%
B 8073 8044 24 24 0.30% 0.30%
C 8072 8043 11 11 0.14% 0.14%
D 8072 8043 479 479 5.93% 5.96%

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 3247290 17623.46 882 862 184.2
A 14 235 53792 287.33 882 862 184.2
A 0 243 17342 89.46 882 862 184.2
B 4 171 124991 713.97 886 859 173.9
B 0 183 99045 564.74 886 859 173.9
B 0 190 80197 456.33 886 859 173.9
C 14 254 40484 195.12 863 867 203.0
C 3 233 20853 98.44 863 867 203.0
C 12 2 18342 86.07 863 867 203.0
D 1 52 1158613 5431.37 837 808 213.2
D 13 249 881582 4131.79 837 808 213.2
D 11 224 506972 2374.46 837 808 213.2

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