ASTROSAT CZTI

Data Quality Report

Orbit 33872

Creation date: 2024-06-27T20:53:40.615223
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/AS1A11_068T01_9000004836_33872cztM0_level2.evt modeM0/AS1A11_068T01_9000004836_33872cztM0_level2_quad_clean.evt
Size (bytes)538,611,84048,450,240
Size513.7 MB 46.2 MB
Events in quadrant A2,748,452285,988
Events in quadrant B3,683,201278,587
Events in quadrant C4,178,317280,792
Events in quadrant D5,349,801256,326

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111393
B0142282
C0163052
D0196212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5207100.192049%
B52072344.493950%
C52071933.706549%
D520753610.293835%

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 7330 5208 0 0 0.00% 0.00%
B 7330 5208 127 127 1.73% 2.44%
C 7330 5208 159 159 2.17% 3.05%
D 7330 5208 440 440 6.00% 8.45%

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 11761 78.92 706 693 140.2
A 13 6 11254 75.31 706 693 140.2
A 13 254 9618 63.64 706 693 140.2
B 5 172 816818 6307.34 685 668 129.4
B 5 255 64947 496.76 685 668 129.4
B 0 199 25427 191.34 685 668 129.4
C 3 233 412340 2675.69 677 687 153.8
C 9 187 327946 2127.14 677 687 153.8
C 0 10 291200 1888.3 677 687 153.8
D 2 249 638150 3930.96 663 645 162.2
D 8 195 612855 3774.99 663 645 162.2
D 12 235 597508 3680.35 663 645 162.2

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