ASTROSAT CZTI

Data Quality Report

Orbit 15239

Creation date: 2024-06-27T17:05:41.455629
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/AS1A04_105T01_9000002248_15239cztM0_level2.evt modeM0/AS1A04_105T01_9000002248_15239cztM0_level2_quad_clean.evt
Size (bytes)466,591,68095,976,000
Size445.0 MB 91.5 MB
Events in quadrant A3,102,831634,628
Events in quadrant B3,219,717643,269
Events in quadrant C4,493,631606,526
Events in quadrant D2,909,760605,626

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132581
B0134171
C0173901
D0127961

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5961681.140748%
B5961681.140748%
C59613736.257339%
D5961590.989767%

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 7047 5962 11 11 0.16% 0.18%
B 7047 5962 8 8 0.11% 0.13%
C 7047 5962 204 204 2.89% 3.42%
D 7047 5962 13 13 0.18% 0.22%

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 12 189 107411 699.54 744 729 152.5
A 0 253 67803 439.82 744 729 152.5
A 9 143 51034 329.86 744 729 152.5
B 3 64 118208 826.74 741 723 142.1
B 10 16 49753 345.02 741 723 142.1
B 0 229 37099 255.98 741 723 142.1
C 4 254 986055 6153.13 694 700 160.1
C 3 233 533756 3328.71 694 700 160.1
C 7 247 159805 993.54 694 700 160.1
D 2 33 66065 371.2 721 701 176.1
D 7 38 50819 284.62 721 701 176.1
D 2 234 26173 144.65 721 701 176.1

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