ASTROSAT CZTI

Data Quality Report

Orbit 09761

Creation date: 2024-06-27T15:50:20.527690
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/AS1A03_080T01_9000001392_09761cztM0_level2.evt modeM0/AS1A03_080T01_9000001392_09761cztM0_level2_quad_clean.evt
Size (bytes)356,800,32061,845,120
Size340.3 MB 59.0 MB
Events in quadrant A2,383,129385,498
Events in quadrant B2,487,251388,896
Events in quadrant C2,266,016384,210
Events in quadrant D3,321,823356,250

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128502242
B0131462418
C0126632274
D0171073818

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012822
B012822
C012826
D012721

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5120681.328125%
B5119541.054894%
C5094260.510404%
D50361352.680699%

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 6572 5355 4 4 0.06% 0.07%
B 6537 5334 2 2 0.03% 0.04%
C 6574 5316 0 0 0.00% 0.00%
D 6543 5263 67 67 1.02% 1.27%

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 8 15 45403 365.46 597 583 122.6
A 14 111 13962 109.09 597 583 122.6
A 0 230 8347 63.31 597 583 122.6
B 0 214 47102 397.23 601 585 117.1
B 10 245 37408 314.44 601 585 117.1
B 0 219 30878 258.68 601 585 117.1
C 13 61 4338 27.7 579 582 135.6
C 8 222 3906 24.52 579 582 135.6
C 11 7 2440 13.7 579 582 135.6
D 1 52 848817 6006.43 563 549 141.2
D 8 195 137097 966.87 563 549 141.2
D 10 253 53860 377.49 563 549 141.2

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