ASTROSAT CZTI

Data Quality Report

Orbit 35193

Creation date: 2022-04-02T01:13:52.042182
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_020T01_9000005050_35193cztM0_level2.evt modeM0/AS1T05_020T01_9000005050_35193cztM0_level2_quad_clean.evt
Size (bytes)708,949,44078,520,320
Size676.1 MB 74.9 MB
Events in quadrant A2,750,287534,056
Events in quadrant B7,996,679451,441
Events in quadrant C3,204,948526,686
Events in quadrant D7,149,024481,129

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116683
B0276062
C0127212
D0251322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5483150.273573%
B5483193535.290899%
C54831803.282874%
D548363811.635966%

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 7127 5484 6 6 0.08% 0.11%
B 7127 5484 1302 1302 18.27% 23.74%
C 7127 5484 136 136 1.91% 2.48%
D 7127 5484 650 650 9.12% 11.85%

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 10 255 110222 837.99 646 634 130.8
A 10 83 102173 776.44 646 634 130.8
A 13 6 15804 116.0 646 634 130.8
B 5 236 5656589 52464.73 559 545 107.8
B 15 85 27415 249.24 559 545 107.8
B 0 189 21003 189.77 559 545 107.8
C 0 10 399674 2768.24 619 624 144.2
C 15 214 226404 1566.25 619 624 144.2
C 9 69 69649 478.83 619 624 144.2
D 8 195 3521782 23205.23 607 589 151.7
D 10 118 350768 2307.74 607 589 151.7
D 12 233 273465 1798.3 607 589 151.7

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