ASTROSAT CZTI

Data Quality Report

Orbit 42961

Creation date: 2024-06-27T22:46:17.701576
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/AS1T05_145T01_9000005836_42961cztM0_level2.fits modeM0/AS1T05_145T01_9000005836_42961cztM0_level2_quad_clean.evt
Size (bytes)1,590,350,400272,145,600
Size1.5 GB 259.5 MB
Events in quadrant A9,883,6692,253,358
Events in quadrant B27,748,115807,398
Events in quadrant C8,092,0972,196,413
Events in quadrant D11,937,0891,905,312

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0398984
B0930074
C0323464
D0458724

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03220
B03220
C03220
D03220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A156241941.241679%
B156241005364.343318%
C15624100.064004%
D156257114.550400%

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 21173 15628 115 115 0.54% 0.74%
B 21173 15628 9160 9160 43.26% 58.61%
C 21173 15628 1 1 0.00% 0.01%
D 21174 15629 757 757 3.58% 4.84%

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 1540656 3446.9 1937 1887 446.4
A 15 237 670146 1496.93 1937 1887 446.4
A 13 248 84934 186.03 1937 1887 446.4
B 4 81 22500339 95108.98 1151 1123 236.6
B 4 171 544533 2297.11 1151 1123 236.6
B 3 112 74055 308.3 1151 1123 236.6
C 15 214 637289 1353.76 1886 1913 469.3
C 14 254 65868 136.27 1886 1913 469.3
C 12 249 22979 44.88 1886 1913 469.3
D 12 2 1498019 3034.37 1843 1779 493.1
D 12 6 811957 1643.04 1843 1779 493.1
D 1 52 677348 1370.05 1843 1779 493.1

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