ASTROSAT CZTI

Data Quality Report

Orbit 34271

Creation date: 2024-06-27T20:58:21.377421
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_34271cztM0_level2.evt modeM0/AS1A11_059T09_9000004888_34271cztM0_level2_quad_clean.evt
Size (bytes)1,317,905,280185,184,000
Size1.2 GB 176.6 MB
Events in quadrant A7,161,8201,157,776
Events in quadrant B10,658,3751,154,687
Events in quadrant C8,059,1081,152,550
Events in quadrant D12,986,0591,071,366

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0314550
B0417150
C0328220
D0491590

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15539220.141579%
B1553910586.808675%
C15539480.308900%
D155394162.677135%

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 19688 15542 7 7 0.04% 0.05%
B 19688 15542 697 697 3.54% 4.48%
C 19688 15542 26 26 0.13% 0.17%
D 19688 15542 343 343 1.74% 2.21%

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 9 143 82798 223.09 1815 1776 363.2
A 10 83 45988 121.74 1815 1776 363.2
A 13 254 24115 61.51 1815 1776 363.2
B 5 172 3106496 9280.73 1759 1712 334.5
B 4 251 205984 610.6 1759 1712 334.5
B 0 190 94245 276.6 1759 1712 334.5
C 15 214 670152 1645.58 1760 1769 406.2
C 14 254 222368 543.12 1760 1769 406.2
C 14 67 111052 269.06 1760 1769 406.2
D 8 195 4188212 9810.09 1741 1692 426.8
D 13 249 650834 1521.11 1741 1692 426.8
D 7 80 557254 1301.82 1741 1692 426.8

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