ASTROSAT CZTI

Data Quality Report

Orbit 36612

Creation date: 2024-06-27T21:29:10.345828
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_073T02_9000005226_36612cztM0_level2.evt modeM0/AS1A10_073T02_9000005226_36612cztM0_level2_quad_clean.evt
Size (bytes)516,991,68090,172,800
Size493.0 MB 86.0 MB
Events in quadrant A2,823,269598,949
Events in quadrant B2,882,455603,844
Events in quadrant C3,996,583582,786
Events in quadrant D5,570,375548,303

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119293
B0120192
C0153792
D0205382

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A566590.158870%
B5665170.300088%
C56653095.454545%
D56653115.489850%

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 9281 5667 0 0 0.00% 0.00%
B 9281 5667 9 9 0.10% 0.16%
C 9281 5667 245 245 2.64% 4.32%
D 9281 5667 300 300 3.23% 5.29%

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 211941 1568.96 664 652 134.7
A 15 223 41054 300.01 664 652 134.7
A 13 254 7064 47.61 664 652 134.7
B 4 171 82890 651.85 657 640 126.2
B 0 219 69423 545.12 657 640 126.2
B 0 213 35194 273.85 657 640 126.2
C 0 207 666461 4551.71 624 626 146.3
C 0 10 491603 3356.36 624 626 146.3
C 15 214 238390 1625.38 624 626 146.3
D 12 235 2626160 16717.02 633 614 157.1
D 2 153 100138 633.68 633 614 157.1
D 10 199 64833 408.89 633 614 157.1

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