ASTROSAT CZTI

Data Quality Report

Orbit 15811

Creation date: 2024-06-27T17:13:53.150826
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/AS1A04_026T01_9000002342_15811cztM0_level2.evt modeM0/AS1A04_026T01_9000002342_15811cztM0_level2_quad_clean.evt
Size (bytes)482,993,28091,961,280
Size460.6 MB 87.7 MB
Events in quadrant A4,753,961558,338
Events in quadrant B3,283,649592,569
Events in quadrant C3,106,393588,627
Events in quadrant D3,024,706574,790

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186202
B0142711
C0138331
D0140191

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67465257.782390%
B67461121.660243%
C67461001.482360%
D6746691.022828%

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 6997 6749 328 328 4.69% 4.86%
B 6997 6749 10 10 0.14% 0.15%
C 6997 6749 5 5 0.07% 0.07%
D 6997 6749 7 7 0.10% 0.10%

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 15 239 1734936 11037.96 765 746 157.1
A 13 210 50935 319.45 765 746 157.1
A 13 248 18073 110.28 765 746 157.1
B 4 173 63813 423.85 780 762 148.8
B 4 216 54288 359.82 780 762 148.8
B 4 48 46897 310.14 780 762 148.8
C 14 238 115270 654.9 749 753 174.9
C 10 22 39985 224.36 749 753 174.9
C 3 233 24986 138.58 749 753 174.9
D 10 70 44323 235.31 761 735 185.2
D 13 172 38487 203.8 761 735 185.2
D 2 152 32505 171.51 761 735 185.2

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