ASTROSAT CZTI

Data Quality Report

Orbit 12660

Creation date: 2024-06-27T16:30:41.207792
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/AS1A04_174T01_9000001876_12660cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12660cztM0_level2_quad_clean.evt
Size (bytes)524,753,28096,399,360
Size500.4 MB 91.9 MB
Events in quadrant A3,288,353632,802
Events in quadrant B5,091,089591,046
Events in quadrant C3,521,099625,471
Events in quadrant D3,535,806601,780

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139533
B0193102
C0147622
D0150812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6709961.430914%
B670971110.597705%
C67091311.952601%
D6709881.311671%

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 7690 6710 0 0 0.00% 0.00%
B 7690 6710 528 528 6.87% 7.87%
C 7690 6710 60 60 0.78% 0.89%
D 7690 6710 7 7 0.09% 0.10%

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 15 27022 150.17 847 831 174.4
A 12 189 8574 44.4 847 831 174.4
A 0 226 7500 38.24 847 831 174.4
B 4 239 1742422 11213.18 807 789 155.3
B 11 51 92880 592.91 807 789 155.3
B 3 64 34771 218.79 807 789 155.3
C 15 208 327583 1732.46 815 823 188.6
C 14 234 12715 63.05 815 823 188.6
C 13 61 5980 27.34 815 823 188.6
D 10 157 300416 1521.48 816 794 196.9
D 1 52 42229 210.41 816 794 196.9
D 13 104 35425 175.86 816 794 196.9

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