ASTROSAT CZTI

Data Quality Report

Orbit 34999

Creation date: 2022-06-11T09:59:15.915368
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/AS1T05_010T01_9000005016_34999cztM0_level2.evt modeM0/AS1T05_010T01_9000005016_34999cztM0_level2_quad_clean.evt
Size (bytes)478,961,28056,727,360
Size456.8 MB 54.1 MB
Events in quadrant A2,819,278344,016
Events in quadrant B2,916,256345,209
Events in quadrant C3,002,001336,886
Events in quadrant D5,402,069313,714

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117413
B0119842
C0119702
D0197742

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5392170.315282%
B5392330.612018%
C5392781.446588%
D539262511.591246%

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 7275 5393 1 1 0.01% 0.02%
B 7275 5393 9 9 0.12% 0.17%
C 7275 5393 61 61 0.84% 1.13%
D 7275 5393 522 522 7.18% 9.68%

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 79329 579.72 683 672 135.7
A 15 223 61060 445.07 683 672 135.7
A 13 6 14657 103.07 683 672 135.7
B 0 199 79572 626.7 677 662 125.9
B 5 172 38743 302.44 677 662 125.9
B 4 232 37226 290.39 677 662 125.9
C 15 214 225334 1505.61 650 656 149.2
C 0 10 186551 1245.72 650 656 149.2
C 14 67 38828 255.8 650 656 149.2
D 10 118 1144784 7549.62 627 611 151.6
D 8 195 909575 5997.64 627 611 151.6
D 13 249 334590 2203.7 627 611 151.6

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