ASTROSAT CZTI

Data Quality Report

Orbit 45929

Creation date: 2024-06-27T23:17:50.309474
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/AS1A13_071T03_9000006142_45929cztM0_level2.fits modeM0/AS1A13_071T03_9000006142_45929cztM0_level2_quad_clean.evt
Size (bytes)614,934,720116,922,240
Size586.4 MB 111.5 MB
Events in quadrant A6,393,846780,220
Events in quadrant B7,453,693743,530
Events in quadrant C3,693,122779,533
Events in quadrant D4,638,606712,270

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234950
B0271690
C0166310
D0188170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75381261.671531%
B753893512.403821%
C7538941.247015%
D75381011.339878%

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 7538 7538 7 7 0.09% 0.09%
B 7538 7538 677 677 8.98% 8.98%
C 7538 7538 72 72 0.96% 0.96%
D 7538 7538 78 78 1.03% 1.03%

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 10 83 3083812 17419.82 840 820 177.0
A 0 247 23046 125.58 840 820 177.0
A 14 235 15346 82.08 840 820 177.0
B 3 112 3945739 24486.86 806 780 161.1
B 10 246 113357 698.78 806 780 161.1
B 4 171 49298 301.16 806 780 161.1
C 14 254 394064 2025.33 822 827 194.2
C 12 2 30076 150.64 822 827 194.2
C 12 249 28956 144.88 822 827 194.2
D 11 241 492848 2362.16 825 797 208.3
D 1 52 224263 1072.78 825 797 208.3
D 2 37 156782 748.83 825 797 208.3

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