ASTROSAT CZTI

Data Quality Report

Orbit 28172

Creation date: 2024-06-27T19:48:49.983976
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/AS1A10_073T05_9000004068_28172cztM0_level2.evt modeM0/AS1A10_073T05_9000004068_28172cztM0_level2_quad_clean.evt
Size (bytes)591,716,16092,770,560
Size564.3 MB 88.5 MB
Events in quadrant A3,444,605598,845
Events in quadrant B3,638,575595,206
Events in quadrant C3,601,229568,328
Events in quadrant D6,746,184544,121

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149010
B0154650
C0152270
D0249220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72161622.245011%
B72031952.707205%
C72042213.067740%
D719287712.194105%

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 7789 7277 0 0 0.00% 0.00%
B 7789 7268 17 17 0.22% 0.23%
C 7789 7266 13 13 0.17% 0.18%
D 7786 7271 658 658 8.45% 9.05%

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 11585 60.24 888 867 177.9
A 12 16 9422 48.08 888 867 177.9
A 3 137 8822 44.71 888 867 177.9
B 10 245 159444 948.28 869 848 167.2
B 12 111 20882 119.79 869 848 167.2
B 0 230 19163 109.51 869 848 167.2
C 3 233 209123 1066.25 834 838 195.3
C 14 238 134688 685.2 834 838 195.3
C 13 61 5793 25.37 834 838 195.3
D 1 52 2213536 11371.08 819 797 194.6
D 8 195 834774 4285.74 819 797 194.6
D 2 250 374788 1921.91 819 797 194.6

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