ASTROSAT CZTI

Data Quality Report

Orbit 39418

Creation date: 2024-06-27T22:04:19.546474
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/AS1A12_077T06_9000005474_39418cztM0_level2.fits modeM0/AS1A12_077T06_9000005474_39418cztM0_level2_quad_clean.evt
Size (bytes)489,844,80045,362,880
Size467.2 MB 43.3 MB
Events in quadrant A4,750,896288,525
Events in quadrant B1,715,193422,621
Events in quadrant C3,061,502377,374
Events in quadrant D8,344,40047,145

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163952
B072641
C0113221
D0270651

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3346118735.475194%
B3346210.627615%
C33462517.501494%
D3346302090.257023%

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 5469 3347 891 891 16.29% 26.62%
B 5469 3347 9 9 0.16% 0.27%
C 5469 3347 196 196 3.58% 5.86%
D 5468 3346 2660 2660 48.65% 79.50%

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 15 222 2760259 38841.89 347 341 71.1
A 15 174 268815 3778.39 347 341 71.1
A 10 83 239149 3360.88 347 341 71.1
B 5 255 97771 1294.4 387 377 75.2
B 5 172 46531 613.4 387 377 75.2
B 15 85 41840 551.06 387 377 75.2
C 15 208 1032089 12011.37 367 370 85.9
C 10 70 437426 5088.25 367 370 85.9
C 15 214 136965 1590.25 367 370 85.9
D 12 235 6109737 130870.87 184 179 46.7
D 12 0 1273915 27284.29 184 179 46.7
D 12 227 107278 2294.13 184 179 46.7

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