ASTROSAT CZTI

Data Quality Report

Orbit 03501

Creation date: 2024-06-27T14:30:13.413201
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_192T01_9000000466_03501cztM0_level2.evt modeM0/AS1G05_192T01_9000000466_03501cztM0_level2_quad_clean.evt
Size (bytes)476,222,40058,720,320
Size454.2 MB 56.0 MB
Events in quadrant A3,791,732331,391
Events in quadrant B3,931,813334,843
Events in quadrant C3,190,522334,382
Events in quadrant D3,070,640327,193

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154853
B0160042
C0137342
D0135812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64492063.194294%
B64491151.783222%
C6449651.007908%
D6449771.193984%

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 7684 6449 101 101 1.31% 1.57%
B 7684 6449 14 14 0.18% 0.22%
C 7684 6449 6 6 0.08% 0.09%
D 7684 6449 11 11 0.14% 0.17%

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 50 391313 2400.18 801 785 162.7
A 14 238 149041 911.18 801 785 162.7
A 8 15 104260 635.96 801 785 162.7
B 15 204 532001 3474.84 811 794 152.9
B 4 81 88830 575.88 811 794 152.9
B 2 249 63831 412.35 811 794 152.9
C 7 220 63358 347.37 781 786 180.1
C 1 192 35443 192.4 781 786 180.1
C 1 16 29242 157.97 781 786 180.1
D 13 223 62700 329.17 780 759 188.2
D 5 233 17708 90.07 780 759 188.2
D 13 239 15337 77.47 780 759 188.2

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
Veto Counter