ASTROSAT CZTI

Data Quality Report

Orbit 31386

Creation date: 2024-06-27T20:27:36.949527
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/AS1C06_006T05_9000004550_31386cztM0_level2.evt modeM0/AS1C06_006T05_9000004550_31386cztM0_level2_quad_clean.evt
Size (bytes)576,895,68096,131,520
Size550.2 MB 91.7 MB
Events in quadrant A3,354,021632,453
Events in quadrant B6,006,749607,573
Events in quadrant C3,571,209597,924
Events in quadrant D4,073,132593,615

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144911
B0227901
C0147981
D0167333

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68771472.137560%
B68784857.051468%
C68782643.838325%
D68771562.268431%

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 7012 6878 1 1 0.01% 0.01%
B 7013 6879 96 96 1.37% 1.40%
C 7013 6879 1 1 0.01% 0.01%
D 7012 6878 22 22 0.31% 0.32%

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 13 254 13273 70.52 867 847 176.2
A 3 137 8723 44.7 867 847 176.2
A 0 226 7435 37.39 867 847 176.2
B 6 159 1953134 11975.87 836 814 163.0
B 5 172 257710 1575.84 836 814 163.0
B 0 190 202525 1237.33 836 814 163.0
C 14 238 152687 780.28 822 827 194.6
C 3 233 122542 625.39 822 827 194.6
C 0 10 36671 184.17 822 827 194.6
D 8 195 649757 3184.78 845 822 203.8
D 13 249 64058 310.34 845 822 203.8
D 10 203 56007 270.83 845 822 203.8

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