ASTROSAT CZTI

Data Quality Report

Orbit 27606

Creation date: 2024-06-27T19:42:06.582087
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/AS1T03_257T01_9000003976_27606cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27606cztM0_level2_quad_clean.evt
Size (bytes)460,782,72068,135,040
Size439.4 MB 65.0 MB
Events in quadrant A3,273,215408,244
Events in quadrant B3,476,177413,310
Events in quadrant C3,399,686393,016
Events in quadrant D3,353,765384,765

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137510
B0142010
C0140850
D0144150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6647971.459305%
B66481301.955475%
C66471452.181435%
D6647821.233639%

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 7537 6648 1 1 0.01% 0.02%
B 7538 6649 1 1 0.01% 0.02%
C 7537 6648 12 12 0.16% 0.18%
D 7537 6648 15 15 0.20% 0.23%

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 6 16 15668 87.76 843 824 169.1
A 13 254 10775 58.83 843 824 169.1
A 3 137 8020 42.54 843 824 169.1
B 0 230 53206 325.36 842 822 161.0
B 3 64 49122 300.0 842 822 161.0
B 0 190 25090 150.73 842 822 161.0
C 14 238 128995 671.48 808 816 190.9
C 2 16 112126 583.11 808 816 190.9
C 1 16 10210 49.21 808 816 190.9
D 6 112 104267 536.91 809 788 192.7
D 7 80 79672 409.3 809 788 192.7
D 2 250 53796 275.04 809 788 192.7

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