ASTROSAT CZTI

Data Quality Report

Orbit 26383

Creation date: 2024-06-27T19:28:02.629439
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/AS1A09_088T01_9000003808_26383cztM0_level2.evt modeM0/AS1A09_088T01_9000003808_26383cztM0_level2_quad_clean.evt
Size (bytes)710,956,80072,115,200
Size678.0 MB 68.8 MB
Events in quadrant A3,191,564458,856
Events in quadrant B3,276,316464,007
Events in quadrant C6,416,151412,998
Events in quadrant D8,213,944399,618

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137030
B0138170
C0236710
D0288420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6414430.670408%
B6414671.044590%
C641583613.031956%
D6415144522.525331%

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 7509 6414 2 2 0.03% 0.03%
B 7509 6415 17 17 0.23% 0.27%
C 7509 6415 390 390 5.19% 6.08%
D 7510 6416 1193 1193 15.89% 18.59%

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 0 13 56551 344.14 813 796 162.0
A 13 254 11116 63.7 813 796 162.0
A 3 137 7341 40.4 813 796 162.0
B 0 245 89796 587.87 807 788 151.4
B 5 172 21442 136.41 807 788 151.4
B 0 230 18021 113.82 807 788 151.4
C 3 233 3358562 19594.47 742 746 171.4
C 14 238 121342 703.74 742 746 171.4
C 2 16 31101 177.14 742 746 171.4
D 7 80 3638606 21554.45 712 695 168.8
D 1 52 1762674 10439.64 712 695 168.8
D 12 233 55298 323.52 712 695 168.8

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