ASTROSAT CZTI

Data Quality Report

Orbit 31497

Creation date: 2024-06-27T20:29:16.337797
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/AS1A10_048T04_9000004586_31497cztM0_level2.evt modeM0/AS1A10_048T04_9000004586_31497cztM0_level2_quad_clean.evt
Size (bytes)483,750,72057,813,120
Size461.3 MB 55.1 MB
Events in quadrant A3,048,836355,191
Events in quadrant B4,553,352355,228
Events in quadrant C3,239,116336,289
Events in quadrant D3,441,377323,628

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136771494
B0192522232
C0142581551
D0154781954

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012315
B012515
C012418
D012618

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131
B0142
C0131
D0142

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5454571.045105%
B5425991.824885%
C54461893.470437%
D5422631.161933%

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 7670 5512 13 13 0.17% 0.24%
B 7670 5479 1 1 0.01% 0.02%
C 7669 5506 79 79 1.03% 1.43%
D 7670 5487 39 39 0.51% 0.71%

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 88599 581.24 767 755 151.1
A 13 254 9658 58.91 767 755 151.1
A 3 137 7200 42.64 767 755 151.1
B 6 159 1464785 10322.53 759 742 141.8
B 4 80 42503 294.44 759 742 141.8
B 15 33 25797 176.66 759 742 141.8
C 0 10 246125 1469.28 717 722 167.0
C 14 238 118964 707.94 717 722 167.0
C 12 249 31187 182.4 717 722 167.0
D 8 195 494653 2902.22 721 705 170.2
D 2 250 111797 652.73 721 705 170.2
D 12 79 45166 261.23 721 705 170.2

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