ASTROSAT CZTI

Data Quality Report

Orbit 11467

Creation date: 2024-06-27T16:13:21.162067
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/AS1G08_032T01_9000001680_11467cztM0_level2.evt modeM0/AS1G08_032T01_9000001680_11467cztM0_level2_quad_clean.evt
Size (bytes)571,178,880102,859,200
Size544.7 MB 98.1 MB
Events in quadrant A3,520,025667,752
Events in quadrant B5,825,272629,998
Events in quadrant C3,373,371661,666
Events in quadrant D4,075,346638,131

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155933
B0222082
C0152942
D0171992

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7429660.888410%
B74296769.099475%
C7429300.403823%
D7429861.157626%

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 7730 7431 5 5 0.06% 0.07%
B 7730 7431 368 368 4.76% 4.95%
C 7730 7431 3 3 0.04% 0.04%
D 7730 7431 71 71 0.92% 0.96%

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 9 143 43865 240.8 879 859 178.6
A 3 1 15606 82.57 879 859 178.6
A 1 162 15283 80.76 879 859 178.6
B 4 239 1717025 10585.52 848 829 162.1
B 15 204 393090 2419.47 848 829 162.1
B 3 64 179046 1099.24 848 829 162.1
C 14 234 11769 54.71 859 864 199.3
C 0 207 6120 26.37 859 864 199.3
C 13 61 6116 26.35 859 864 199.3
D 1 52 364889 1751.94 858 834 207.8
D 2 120 156899 751.03 858 834 207.8
D 8 195 52982 250.95 858 834 207.8

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