ASTROSAT CZTI

Data Quality Report

Orbit 04881

Creation date: 2024-06-27T14:48:23.330411
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/AS1G05_237T01_9000000620_04881cztM0_level2.evt modeM0/AS1G05_237T01_9000000620_04881cztM0_level2_quad_clean.evt
Size (bytes)571,740,48084,856,320
Size545.3 MB 80.9 MB
Events in quadrant A3,774,088520,931
Events in quadrant B4,276,400520,947
Events in quadrant C3,484,901517,235
Events in quadrant D5,275,300492,827

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161003
B0176792
C0153812
D0208222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7434951.277912%
B74341471.977401%
C7434630.847458%
D74345867.882701%

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 8789 7436 8 8 0.09% 0.11%
B 8789 7436 16 16 0.18% 0.22%
C 8789 7436 0 0 0.00% 0.00%
D 8789 7436 391 391 4.45% 5.26%

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 0 31 149290 785.94 910 890 188.8
A 15 234 46576 241.96 910 890 188.8
A 12 133 35325 182.37 910 890 188.8
B 4 80 319302 1817.84 915 896 175.2
B 15 204 156728 889.68 915 896 175.2
B 5 6 79160 446.82 915 896 175.2
C 8 128 11556 51.76 883 888 206.1
C 12 4 8885 38.8 883 888 206.1
C 13 61 7076 30.03 883 888 206.1
D 1 52 814995 3817.99 859 833 213.2
D 13 235 356349 1667.18 859 833 213.2
D 2 234 253430 1184.55 859 833 213.2

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