ASTROSAT CZTI

Data Quality Report

Orbit 45227

Creation date: 2024-06-27T23:10:53.524019
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/AS1A13_049T07_9000006056_45227cztM0_level2.fits modeM0/AS1A13_049T07_9000006056_45227cztM0_level2_quad_clean.evt
Size (bytes)471,369,600111,337,920
Size449.5 MB 106.2 MB
Events in quadrant A5,210,993741,905
Events in quadrant B3,700,237772,657
Events in quadrant C3,097,387761,784
Events in quadrant D4,948,294653,208

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202031
B0150031
C0133361
D0190741

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63351031.625888%
B63351892.983425%
C6336380.599747%
D63363966.250000%

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 7560 6336 11 11 0.15% 0.17%
B 7560 6335 134 134 1.77% 2.12%
C 7561 6337 16 16 0.21% 0.25%
D 7561 6337 370 370 4.89% 5.84%

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 2302842 15156.07 735 721 151.9
A 2 79 40592 262.49 735 721 151.9
A 13 248 25827 165.29 735 721 151.9
B 5 32 518953 3649.78 738 715 142.0
B 3 112 99290 694.23 738 715 142.0
B 5 172 59127 411.38 738 715 142.0
C 12 2 71916 406.74 747 752 175.0
C 14 254 39035 218.81 747 752 175.0
C 2 14 34799 194.59 747 752 175.0
D 13 249 903240 5046.81 716 695 178.8
D 1 52 313020 1746.44 716 695 178.8
D 5 222 256098 1428.15 716 695 178.8

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