ASTROSAT CZTI

Data Quality Report

Orbit 39436

Creation date: 2024-06-27T22:04:32.838046
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_39436cztM0_level2.fits modeM0/AS1A12_077T06_9000005474_39436cztM0_level2_quad_clean.evt
Size (bytes)548,910,72081,063,360
Size523.5 MB 77.3 MB
Events in quadrant A7,201,534508,838
Events in quadrant B2,919,060604,771
Events in quadrant C2,860,802573,827
Events in quadrant D6,921,504391,336

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250582
B0124001
C0117451
D0242351

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5359110220.563538%
B53591011.884680%
C5359290.541146%
D5359155729.053928%

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 6882 5360 1012 1012 14.71% 18.88%
B 6882 5360 55 55 0.80% 1.03%
C 6882 5360 21 21 0.31% 0.39%
D 6882 5360 1226 1226 17.81% 22.87%

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 4604616 39601.74 566 554 116.3
A 10 83 378457 3250.52 566 554 116.3
A 9 143 18215 151.91 566 554 116.3
B 8 3 566010 4915.76 587 570 115.0
B 5 255 24173 205.19 587 570 115.0
B 5 172 21495 181.91 587 570 115.0
C 9 187 229005 1687.59 576 578 135.4
C 15 214 222700 1641.01 576 578 135.4
C 15 208 84851 622.6 576 578 135.4
D 12 0 3703424 30206.0 493 477 122.6
D 12 227 999527 8149.54 493 477 122.6
D 2 249 209708 1706.76 493 477 122.6

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