ASTROSAT CZTI

Data Quality Report

Orbit 20888

Creation date: 2024-06-27T18:20:47.340515
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/AS1A06_002T03_9000003080_20888cztM0_level2.evt modeM0/AS1A06_002T03_9000003080_20888cztM0_level2_quad_clean.evt
Size (bytes)492,341,76083,885,760
Size469.5 MB 80.0 MB
Events in quadrant A3,325,212532,322
Events in quadrant B3,598,498534,465
Events in quadrant C3,415,783526,388
Events in quadrant D4,141,985505,781

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134692
B0143422
C0138612
D0160162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6323861.360114%
B63231592.514629%
C63231822.878381%
D63222133.369187%

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 7613 6324 0 0 0.00% 0.00%
B 7613 6324 16 16 0.21% 0.25%
C 7613 6324 0 0 0.00% 0.00%
D 7612 6323 159 159 2.09% 2.51%

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 0 226 7522 38.9 865 849 171.5
A 3 137 6596 33.5 865 849 171.5
A 12 194 6153 30.92 865 849 171.5
B 7 220 152488 960.1 855 837 158.0
B 0 219 31681 195.27 855 837 158.0
B 0 189 22251 135.57 855 837 158.0
C 14 238 133722 696.96 835 842 190.7
C 10 91 18618 93.24 835 842 190.7
C 13 61 6004 27.07 835 842 190.7
D 1 52 708875 3506.25 845 824 201.9
D 1 20 142259 700.38 845 824 201.9
D 5 222 69256 338.87 845 824 201.9

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