ASTROSAT CZTI

Data Quality Report

Orbit 12793

Creation date: 2024-06-27T16:32:17.488539
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_110T04_9000001886_12793cztM0_level2.evt modeM0/AS1A04_110T04_9000001886_12793cztM0_level2_quad_clean.evt
Size (bytes)504,498,240123,016,320
Size481.1 MB 117.3 MB
Events in quadrant A3,109,599853,437
Events in quadrant B4,905,903817,357
Events in quadrant C2,862,903833,759
Events in quadrant D3,982,000790,948

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130132
B0185051
C0125761
D0158121

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6159560.909239%
B615966410.780971%
C6159360.584510%
D61592323.766845%

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 7370 6161 2 2 0.03% 0.03%
B 7370 6161 448 448 6.08% 7.27%
C 7370 6161 1 1 0.01% 0.02%
D 7370 6161 178 178 2.42% 2.89%

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 102788 659.61 768 751 154.7
A 8 15 21133 131.76 768 751 154.7
A 9 143 18300 113.44 768 751 154.7
B 4 239 1816875 13310.54 729 714 136.4
B 0 219 132891 968.72 729 714 136.4
B 0 85 41445 298.52 729 714 136.4
C 13 61 5538 28.75 733 737 167.0
C 14 234 5052 25.84 733 737 167.0
C 3 202 1912 7.04 733 737 167.0
D 8 195 847269 4918.61 729 709 172.1
D 1 52 317936 1843.12 729 709 172.1
D 2 234 23117 130.19 729 709 172.1

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