ASTROSAT CZTI

Data Quality Report

Orbit 12162

Creation date: 2024-06-27T16:23:14.563809
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_065T01_9000001796_12162cztM0_level2.evt modeM0/AS1G08_065T01_9000001796_12162cztM0_level2_quad_clean.evt
Size (bytes)605,885,760107,363,520
Size577.8 MB 102.4 MB
Events in quadrant A4,032,355692,726
Events in quadrant B5,595,937668,258
Events in quadrant C3,669,317681,617
Events in quadrant D4,515,081658,708

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173183
B0221732
C0164562
D0190382

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7914811.023503%
B79145867.404599%
C7914490.619156%
D79141952.463988%

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 8960 7917 17 17 0.19% 0.21%
B 8960 7917 243 243 2.71% 3.07%
C 8960 7917 8 8 0.09% 0.10%
D 8960 7917 104 104 1.16% 1.31%

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 1 162 106232 550.82 949 930 191.2
A 9 143 70010 361.35 949 930 191.2
A 1 178 42955 219.83 949 930 191.2
B 4 239 1260203 7207.75 923 899 174.7
B 3 64 168966 961.95 923 899 174.7
B 15 204 145105 825.38 923 899 174.7
C 15 208 69718 323.1 922 927 212.9
C 13 61 6838 27.76 922 927 212.9
C 12 4 2394 6.89 922 927 212.9
D 1 52 318006 1430.58 913 885 221.7
D 10 199 239282 1075.44 913 885 221.7
D 13 249 150467 674.78 913 885 221.7

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