ASTROSAT CZTI

Data Quality Report

Orbit 06475

Creation date: 2024-06-27T15:07:43.249311
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/AS1G06_139T02_9000000862_06475cztM0_level2.evt modeM0/AS1G06_139T02_9000000862_06475cztM0_level2_quad_clean.evt
Size (bytes)484,084,80093,127,680
Size461.7 MB 88.8 MB
Events in quadrant A3,678,127586,603
Events in quadrant B3,531,546587,559
Events in quadrant C3,290,909580,521
Events in quadrant D3,671,257565,044

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158992
B0152511
C0148993
D0155451

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71882132.963272%
B71882062.865888%
C7187911.266175%
D71881151.599889%

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 7283 7189 14 14 0.19% 0.19%
B 7283 7189 6 6 0.08% 0.08%
C 7283 7189 0 0 0.00% 0.00%
D 7283 7189 7 7 0.10% 0.10%

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 15 236 228470 1279.81 863 845 177.9
A 15 174 104763 584.27 863 845 177.9
A 10 133 13973 73.81 863 845 177.9
B 0 228 52534 307.51 863 840 168.1
B 4 81 51245 299.84 863 840 168.1
B 0 214 36253 210.66 863 840 168.1
C 8 128 13371 64.04 833 835 195.8
C 12 4 7774 35.45 833 835 195.8
C 1 16 7096 31.98 833 835 195.8
D 8 195 134560 642.41 842 815 208.2
D 2 152 105929 504.89 842 815 208.2
D 13 172 53766 254.34 842 815 208.2

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