ASTROSAT CZTI

Data Quality Report

Orbit 34615

Creation date: 2022-02-21T23:48:34.971570
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/AS1A11_046T09_9000004952_34615cztM0_level2.evt modeM0/AS1A11_046T09_9000004952_34615cztM0_level2_quad_clean.evt
Size (bytes)500,184,00089,406,720
Size477.0 MB 85.3 MB
Events in quadrant A2,843,664585,098
Events in quadrant B3,766,404576,291
Events in quadrant C3,121,468580,078
Events in quadrant D5,011,200548,165

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123943
B0150422
C0127302
D0190242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5987100.167029%
B59873065.111074%
C5987641.068983%
D59871161.937531%

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 8911 5989 1 1 0.01% 0.02%
B 8911 5989 201 201 2.26% 3.36%
C 8911 5989 40 40 0.45% 0.67%
D 8911 5989 94 94 1.05% 1.57%

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 10 83 47715 331.31 699 685 142.0
A 15 169 45503 315.73 699 685 142.0
A 13 6 16588 112.03 699 685 142.0
B 5 172 978713 7403.16 681 664 132.1
B 4 232 34017 252.46 681 664 132.1
B 5 255 17654 128.6 681 664 132.1
C 15 214 247981 1574.63 677 682 157.1
C 0 10 157152 996.3 677 682 157.1
C 14 67 44089 276.39 677 682 157.1
D 8 195 1629834 8844.6 669 655 184.2
D 10 118 152363 823.6 669 655 184.2
D 10 230 124139 670.38 669 655 184.2

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter