ASTROSAT CZTI

Data Quality Report

Orbit 38249

Creation date: 2024-06-27T21:50:18.026357
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/AS1A07_145T01_9000005370_38249cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38249cztM0_level2_quad_clean.evt
Size (bytes)519,189,12095,132,160
Size495.1 MB 90.7 MB
Events in quadrant A3,214,841661,475
Events in quadrant B2,904,937676,365
Events in quadrant C3,974,001640,710
Events in quadrant D8,667,977490,456

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131483
B0126232
C0155252
D0299412

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5891160.271601%
B5891580.984553%
C58911482.512307%
D5891136723.204889%

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 9056 5893 7 7 0.08% 0.12%
B 9056 5893 33 33 0.36% 0.56%
C 9056 5893 131 131 1.45% 2.22%
D 9056 5893 1498 1498 16.54% 25.42%

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 411906 3081.15 659 647 133.5
A 12 189 118977 886.53 659 647 133.5
A 12 16 86000 639.46 659 647 133.5
B 5 172 170538 1327.82 654 637 128.0
B 15 85 62786 485.71 654 637 128.0
B 0 229 46830 361.01 654 637 128.0
C 9 236 723953 4865.26 638 642 148.7
C 15 208 297129 1994.28 638 642 148.7
C 15 214 248202 1665.18 638 642 148.7
D 12 235 3375682 22640.91 605 586 149.1
D 10 203 2651786 17784.85 605 586 149.1
D 1 47 104128 694.58 605 586 149.1

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