ASTROSAT CZTI

Data Quality Report

Orbit 03020

Creation date: 2024-06-27T14:23:32.067344
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_238T02_9000000420_03020cztM0_level2.evt modeM0/AS1G05_238T02_9000000420_03020cztM0_level2_quad_clean.evt
Size (bytes)347,267,52048,070,080
Size331.2 MB 45.8 MB
Events in quadrant A2,650,901271,389
Events in quadrant B2,717,058271,281
Events in quadrant C2,400,590266,797
Events in quadrant D2,376,130263,074

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113933
B0116192
C0112332
D0112422

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A546190.164805%
B5461250.457792%
C5461150.274675%
D5461100.183117%

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 9773 5463 0 0 0.00% 0.00%
B 9773 5463 9 9 0.09% 0.16%
C 9773 5463 10 10 0.10% 0.18%
D 9773 5463 14 14 0.14% 0.26%

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 8 15 158369 1301.04 598 584 121.3
A 0 50 149344 1226.63 598 584 121.3
A 13 251 14517 114.89 598 584 121.3
B 15 204 167910 1413.99 607 593 118.3
B 0 219 72379 606.66 607 593 118.3
B 4 81 62206 520.69 607 593 118.3
C 6 80 73840 539.13 576 579 135.9
C 0 219 31814 229.86 576 579 135.9
C 1 192 17900 127.47 576 579 135.9
D 2 152 102335 732.66 573 559 138.9
D 2 209 35586 252.15 573 559 138.9
D 2 136 22077 154.9 573 559 138.9

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
Veto Counter