ASTROSAT CZTI

Data Quality Report

Orbit 18382

Creation date: 2024-06-27T17:49:05.897501
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_006T01_9000002724_18382cztM0_level2.evt modeM0/AS1A06_006T01_9000002724_18382cztM0_level2_quad_clean.evt
Size (bytes)504,204,48071,101,440
Size480.8 MB 67.8 MB
Events in quadrant A3,378,561430,897
Events in quadrant B3,493,082443,445
Events in quadrant C3,473,365425,514
Events in quadrant D4,490,911406,446

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137112
B0141372
C0139592
D0174522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6399500.781372%
B6399590.922019%
C6399951.484607%
D63991963.062979%

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 7714 6400 17 17 0.22% 0.27%
B 7714 6400 2 2 0.03% 0.03%
C 7714 6400 2 2 0.03% 0.03%
D 7714 6400 147 147 1.91% 2.30%

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 4 2 56969 329.77 857 843 170.2
A 0 8 16622 92.71 857 843 170.2
A 15 174 8073 42.48 857 843 170.2
B 3 64 56323 339.5 870 851 163.4
B 12 111 18389 107.34 870 851 163.4
B 11 111 15139 87.44 870 851 163.4
C 14 238 130656 675.63 833 842 192.1
C 0 207 52808 270.46 833 842 192.1
C 3 233 45401 231.91 833 842 192.1
D 1 52 869033 4340.74 827 807 200.0
D 10 70 268501 1338.35 827 807 200.0
D 14 34 95628 474.06 827 807 200.0

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