ASTROSAT CZTI

Data Quality Report

Orbit 36107

Creation date: 2022-08-10T11:37:29.218499
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/AS1T04_069T01_9000005158_36107cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36107cztM0_level2_quad_clean.evt
Size (bytes)504,872,64085,478,400
Size481.5 MB 81.5 MB
Events in quadrant A2,885,161560,377
Events in quadrant B3,597,379555,918
Events in quadrant C3,978,672545,927
Events in quadrant D4,422,306507,516

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 7276 5994 0 0 0.00% 0.00%
B 7276 5993 120 120 1.65% 2.00%
C 7276 5994 90 90 1.24% 1.50%
D 7276 5994 328 328 4.51% 5.47%

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 185781 1314.59 691 676 140.8
A 8 144 12676 85.22 691 676 140.8
A 7 3 11345 75.77 691 676 140.8
B 5 172 425332 3252.61 675 658 130.6
B 5 236 304781 2329.3 675 658 130.6
B 0 190 79996 607.65 675 658 130.6
C 0 207 873229 5600.64 661 666 155.8
C 15 214 270119 1729.51 661 666 155.8
C 0 10 153450 980.66 661 666 155.8
D 1 52 781438 4872.71 648 629 160.2
D 12 6 402951 2510.73 648 629 160.2
D 2 250 191456 1190.87 648 629 160.2

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