ASTROSAT CZTI

Data Quality Report

Orbit 11579

Creation date: 2024-06-27T16:15:24.162440
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_137T01_9000001700_11579cztM0_level2.evt modeM0/AS1A04_137T01_9000001700_11579cztM0_level2_quad_clean.evt
Size (bytes)628,462,08086,198,400
Size599.3 MB 82.2 MB
Events in quadrant A5,070,539559,363
Events in quadrant B6,440,094500,723
Events in quadrant C3,219,559572,644
Events in quadrant D3,873,422534,048

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0195603
B0233502
C0134512
D0154192

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63513525.542434%
B6351118718.689970%
C63511001.574555%
D63512994.707920%

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 7602 6353 140 140 1.84% 2.20%
B 7602 6353 824 824 10.84% 12.97%
C 7602 6353 2 2 0.03% 0.03%
D 7602 6353 179 179 2.35% 2.82%

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 8 5 1586141 9309.91 846 831 170.3
A 1 162 49969 288.57 846 831 170.3
A 9 143 45952 264.98 846 831 170.3
B 3 64 1660204 10933.15 798 780 151.8
B 4 239 942729 6206.05 798 780 151.8
B 15 255 496265 3264.51 798 780 151.8
C 9 54 23676 121.08 820 825 188.7
C 13 61 6018 27.52 820 825 188.7
C 3 202 1930 5.86 820 825 188.7
D 10 253 469733 2419.74 813 793 193.8
D 2 120 120770 619.08 813 793 193.8
D 1 52 107052 548.3 813 793 193.8

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