ASTROSAT CZTI

Data Quality Report

Orbit 36279

Creation date: 2022-06-14T10:55:46.491567
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/AS1A10_071T35_9000005184_36279cztM0_level2.evt modeM0/AS1A10_071T35_9000005184_36279cztM0_level2_quad_clean.evt
Size (bytes)571,098,24058,417,920
Size544.6 MB 55.7 MB
Events in quadrant A2,851,262356,281
Events in quadrant B3,204,200356,864
Events in quadrant C3,508,910337,186
Events in quadrant D7,339,259313,636

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119623
B0131912
C0138932
D0256432

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5791100.172682%
B5791951.640477%
C57911672.883785%
D5791160927.784493%

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 9377 5793 1 1 0.01% 0.02%
B 9377 5793 68 68 0.73% 1.17%
C 9377 5793 144 144 1.54% 2.49%
D 9377 5793 1548 1548 16.51% 26.72%

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 10 83 185751 1338.28 678 665 138.3
A 13 6 22700 159.33 678 665 138.3
A 9 143 14162 97.59 678 665 138.3
B 5 172 245378 1895.31 670 652 129.1
B 5 236 172239 1328.88 670 652 129.1
B 8 128 92722 713.05 670 652 129.1
C 0 207 432371 2846.24 647 650 151.7
C 0 10 307084 2020.25 647 650 151.7
C 15 214 238746 1569.71 647 650 151.7
D 12 6 3511680 24996.92 572 556 140.5
D 13 249 969756 6900.07 572 556 140.5
D 2 153 380273 2703.33 572 556 140.5

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