ASTROSAT CZTI

Data Quality Report

Orbit 34242

Creation date: 2022-07-18T13:44:11.535051
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_059T09_9000004888_34242cztM0_level2.evt modeM0/AS1A11_059T09_9000004888_34242cztM0_level2_quad_clean.evt
Size (bytes)1,310,178,240183,044,160
Size1.2 GB 174.6 MB
Events in quadrant A7,534,4361,143,446
Events in quadrant B9,906,6111,141,006
Events in quadrant C9,595,7241,103,894
Events in quadrant D11,581,6501,070,613

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0326350
B0392290
C0377380
D0448690

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03220
B03220
C03220
D03220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0450

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15716320.203614%
B157166904.390430%
C157164212.678799%
D157164682.977857%

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 19865 15719 15 15 0.08% 0.10%
B 19865 15719 452 452 2.28% 2.88%
C 19865 15719 282 282 1.42% 1.79%
D 19865 15719 385 385 1.94% 2.45%

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 267510 728.71 1825 1788 364.6
A 9 143 129497 350.22 1825 1788 364.6
A 10 83 51677 136.81 1825 1788 364.6
B 5 172 2170396 6332.05 1793 1750 342.5
B 4 251 207120 599.64 1793 1750 342.5
B 4 171 156451 451.7 1793 1750 342.5
C 14 254 823640 2038.94 1747 1758 403.1
C 15 214 669562 1656.7 1747 1758 403.1
C 0 10 578200 1430.05 1747 1758 403.1
D 8 195 2568288 5981.52 1756 1706 429.1
D 12 218 1056628 2458.54 1756 1706 429.1
D 2 250 261359 605.13 1756 1706 429.1

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