ASTROSAT CZTI

Data Quality Report

Orbit 55473

Creation date: 2025-12-30T09:23:23.707120
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/AS1A14_099T01_9000006536_55473cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55473cztM0_level2_quad_clean.evt
Size (bytes)425,600,64096,854,400
Size405.9 MB 92.4 MB
Events in quadrant A3,480,793636,234
Events in quadrant B3,336,040682,849
Events in quadrant C3,761,190594,731
Events in quadrant D4,661,465558,088

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0212
B0213
C0213
D0213

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01342
B01342
C01342
D01342

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01519391
B01477386
C01611795
D01860392

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66151912.887377%
B66151802.721088%
C66152283.446712%
D66143345.049894%

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 7655 6615 85 85 1.11% 1.28%
B 7655 6615 72 72 0.94% 1.09%
C 7655 6615 163 163 2.13% 2.46%
D 7654 6614 261 261 3.41% 3.95%

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 0 8 246408 1369.53 720 702 179.4
A 3 78 234904 1305.41 720 702 179.4
A 6 179 64396 355.02 720 702 179.4
B 5 172 224437 1479.82 709 683 151.2
B 0 171 156555 1030.87 709 683 151.2
B 0 183 47565 310.06 709 683 151.2
C 9 38 664473 3553.13 682 674 186.8
C 13 3 227929 1216.43 682 674 186.8
C 12 2 62679 331.9 682 674 186.8
D 11 129 1314728 6742.96 685 653 194.9
D 8 160 372449 1907.81 685 653 194.9
D 2 249 164790 842.24 685 653 194.9

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