ASTROSAT CZTI

Data Quality Report

Orbit 12366

Creation date: 2024-06-27T16:26:12.190525
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_212T01_9000001834_12366cztM0_level2.evt modeM0/AS1A04_212T01_9000001834_12366cztM0_level2_quad_clean.evt
Size (bytes)538,387,200118,903,680
Size513.4 MB 113.4 MB
Events in quadrant A4,806,012792,872
Events in quadrant B3,842,479808,342
Events in quadrant C3,084,008781,879
Events in quadrant D4,119,662752,207

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187982
B0158621
C0140321
D0167821

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66862573.843853%
B66861181.764882%
C6686530.792701%
D66862023.021238%

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 7027 6687 41 41 0.58% 0.61%
B 7027 6687 48 48 0.68% 0.72%
C 7026 6686 16 16 0.23% 0.24%
D 7027 6687 178 178 2.53% 2.66%

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 15 814849 5259.45 758 740 154.8
A 13 251 573589 3700.82 758 740 154.8
A 1 162 202066 1300.64 758 740 154.8
B 4 239 471818 3255.98 762 744 144.7
B 10 245 157057 1080.41 762 744 144.7
B 0 85 64985 444.02 762 744 144.7
C 15 208 157233 922.72 735 736 169.6
C 14 234 45852 266.01 735 736 169.6
C 8 128 5741 29.51 735 736 169.6
D 1 52 566089 3206.87 732 709 176.3
D 13 104 473092 2679.39 732 709 176.3
D 1 7 83130 467.5 732 709 176.3

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