ASTROSAT CZTI

Data Quality Report

Orbit 20230627_A12_101T04_9000005714_level2

Creation date: 2023-06-28T15:04:08.545442
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/AS1A12_101T04_9000005714cztM0_level2.fits modeM0/AS1A12_101T04_9000005714cztM0_level2_quad_clean.evt
Size (bytes)176,912,640203,328,000
Size168.7 MB 193.9 MB
Events in quadrant A1,056,4961,285,408
Events in quadrant B1,033,0601,301,396
Events in quadrant C1,021,2661,189,150
Events in quadrant D811,598948,403

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0710
B0710
C0710
D0710

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550820
B0439150
C0475690
D0859580

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04240
B04240
C04240
D04240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A208157373.540716%
B208151650.792698%
C208157043.382176%
D20815411319.759789%

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 27798 20788 0 0 0.00% 0.00%
B 27798 20815 0 0 0.00% 0.00%
C 27798 20773 0 0 0.00% 0.00%
D 27798 20771 0 0 0.00% 0.00%

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 7 110 866 8.56 275 256 71.3
A 0 29 861 8.49 275 256 71.3
A 9 19 852 8.36 275 256 71.3
B 2 9 921 11.75 272 258 56.4
B 3 80 760 8.89 272 258 56.4
B 2 8 736 8.47 272 258 56.4
C 1 81 831 8.1 269 251 71.6
C 3 202 823 7.99 269 251 71.6
C 1 80 788 7.5 269 251 71.6
D 7 3 627 6.53 231 210 63.8
D 6 38 613 6.31 231 210 63.8
D 4 160 613 6.31 231 210 63.8

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