ASTROSAT CZTI

Data Quality Report

Orbit 27040

Creation date: 2024-06-27T19:35:48.963413
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/AS1A09_120T02_9000003904_27040cztM0_level2.evt modeM0/AS1A09_120T02_9000003904_27040cztM0_level2_quad_clean.evt
Size (bytes)637,600,320116,559,360
Size608.1 MB 111.2 MB
Events in quadrant A8,278,379689,052
Events in quadrant B3,429,999839,390
Events in quadrant C3,483,094798,173
Events in quadrant D3,690,986762,590

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0289300
B0140100
C0142110
D0150860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6311197931.357946%
B6311641.014102%
C63111121.774679%
D63111141.806370%

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 7590 6310 1614 1614 21.26% 25.58%
B 7591 6312 4 4 0.05% 0.06%
C 7591 6312 21 21 0.28% 0.33%
D 7591 6311 85 85 1.12% 1.35%

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 14 235 5300368 35310.57 750 740 150.1
A 6 16 40110 262.32 750 740 150.1
A 8 192 25752 166.65 750 740 150.1
B 15 33 28853 172.13 865 850 162.7
B 0 219 23052 136.47 865 850 162.7
B 12 111 18672 109.55 865 850 162.7
C 14 238 134721 682.29 838 848 196.2
C 2 16 78376 395.13 838 848 196.2
C 13 61 5700 24.73 838 848 196.2
D 5 222 342302 1736.26 827 810 196.7
D 2 250 122880 620.64 827 810 196.7
D 1 52 72563 364.82 827 810 196.7

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