ASTROSAT CZTI

Data Quality Report

Orbit 34461

Creation date: 2022-02-11T14:50:43.586293
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_058T06_9000004920_34461cztM0_level2.evt modeM0/AS1A10_058T06_9000004920_34461cztM0_level2_quad_clean.evt
Size (bytes)625,052,16061,197,120
Size596.1 MB 58.4 MB
Events in quadrant A3,149,575402,964
Events in quadrant B2,901,699408,710
Events in quadrant C2,943,031401,149
Events in quadrant D9,570,032261,299

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126823
B0119392
C0117402
D0320462

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54001743.222222%
B5400440.814815%
C5400270.500000%
D5400240344.500000%

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 7103 5401 126 126 1.77% 2.33%
B 7103 5401 28 28 0.39% 0.52%
C 7103 5401 19 19 0.27% 0.35%
D 7103 5401 2336 2336 32.89% 43.25%

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 15 169 596306 4579.28 648 635 130.1
A 10 83 36184 273.29 648 635 130.1
A 13 6 12537 91.5 648 635 130.1
B 5 172 148546 1172.98 648 631 126.1
B 5 31 139303 1099.68 648 631 126.1
B 5 15 22457 173.08 648 631 126.1
C 15 214 228644 1534.95 640 644 148.5
C 0 10 82821 553.23 640 644 148.5
C 15 208 62690 417.71 640 644 148.5
D 7 223 5465695 51715.47 424 410 105.7
D 8 195 1308698 12379.73 424 410 105.7
D 7 80 481642 4553.68 424 410 105.7

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