ASTROSAT CZTI

Data Quality Report

Orbit 03836

Creation date: 2024-06-27T14:34:10.877261
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/AS1G05_189T01_9000000492_03836cztM0_level2.evt modeM0/AS1G05_189T01_9000000492_03836cztM0_level2_quad_clean.evt
Size (bytes)374,140,80056,136,960
Size356.8 MB 53.5 MB
Events in quadrant A2,839,558333,133
Events in quadrant B2,838,584338,464
Events in quadrant C2,614,883325,883
Events in quadrant D2,661,449314,973

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118840
B0117880
C0114070
D0117410

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5524661.194786%
B5524751.357712%
C5524320.579290%
D5524450.814627%

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 6794 5524 4 4 0.06% 0.07%
B 6794 5524 0 0 0.00% 0.00%
C 6794 5525 0 0 0.00% 0.00%
D 6794 5525 19 19 0.28% 0.34%

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 15 234 148941 1070.58 683 671 138.5
A 13 251 44402 315.76 683 671 138.5
A 0 226 7459 49.01 683 671 138.5
B 15 204 108347 814.77 687 672 132.2
B 14 167 29622 219.06 687 672 132.2
B 10 246 25003 184.11 687 672 132.2
C 2 53 41756 270.58 650 655 151.9
C 9 247 13311 83.32 650 655 151.9
C 10 21 7373 44.23 650 655 151.9
D 13 248 81862 511.43 653 634 158.8
D 2 14 25250 154.99 653 634 158.8
D 2 63 23148 141.75 653 634 158.8

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
Veto Counter