ASTROSAT CZTI

Data Quality Report

Orbit 13735

Creation date: 2024-06-27T16:45:20.700909
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/AS1G08_062T01_9000002038_13735cztM0_level2.evt modeM0/AS1G08_062T01_9000002038_13735cztM0_level2_quad_clean.evt
Size (bytes)480,481,920108,938,880
Size458.2 MB 103.9 MB
Events in quadrant A3,083,084712,291
Events in quadrant B3,249,968721,200
Events in quadrant C3,546,559742,029
Events in quadrant D4,254,242694,238

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129973
B0135702
C0143232
D0168552

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6153180.292540%
B6153360.585080%
C6153951.543962%
D6153560.910125%

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 7509 6155 1 1 0.01% 0.02%
B 7509 6155 5 5 0.07% 0.08%
C 7509 6155 60 60 0.80% 0.97%
D 7509 6155 21 21 0.28% 0.34%

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 1 162 22920 140.3 784 771 157.9
A 0 23 20745 126.52 784 771 157.9
A 15 69 9621 56.06 784 771 157.9
B 0 219 84427 566.21 790 772 147.7
B 4 80 23192 151.75 790 772 147.7
B 0 189 22265 145.47 790 772 147.7
C 4 254 426729 2377.57 776 783 179.2
C 3 233 93448 517.24 776 783 179.2
C 13 61 5644 27.13 776 783 179.2
D 5 222 623604 3394.72 760 740 183.5
D 8 195 287798 1564.52 760 740 183.5
D 10 157 172719 937.32 760 740 183.5

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