ASTROSAT CZTI

Data Quality Report

Orbit 34018

Creation date: 2024-06-27T20:55:27.098236
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_106T03_9000004864_34018cztM0_level2.evt modeM0/AS1A11_106T03_9000004864_34018cztM0_level2_quad_clean.evt
Size (bytes)488,485,44062,625,600
Size465.9 MB 59.7 MB
Events in quadrant A2,517,505417,954
Events in quadrant B4,899,870361,682
Events in quadrant C2,964,108397,609
Events in quadrant D4,089,497384,112

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100253
B0176232
C0115932
D0154142

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A476760.125865%
B476788518.565135%
C4767801.678204%
D47671753.671072%

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 6918 4768 1 1 0.01% 0.02%
B 6918 4768 750 750 10.84% 15.73%
C 6918 4768 80 80 1.16% 1.68%
D 6918 4768 161 161 2.33% 3.38%

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 15 169 88038 727.47 611 602 120.2
A 0 31 40262 329.97 611 602 120.2
A 10 83 17244 138.46 611 602 120.2
B 5 172 2407604 23078.31 556 545 104.3
B 5 31 66706 634.34 556 545 104.3
B 0 189 61404 583.5 556 545 104.3
C 0 10 243766 1857.85 575 578 130.9
C 15 214 226261 1724.12 575 578 130.9
C 3 233 177712 1353.22 575 578 130.9
D 8 195 961605 6099.35 578 568 157.6
D 2 250 161168 1019.27 578 568 157.6
D 12 233 159607 1009.36 578 568 157.6

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