ASTROSAT CZTI

Data Quality Report

Orbit 42167

Creation date: 2024-06-27T22:37:40.388562
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/AS1A11_032T04_9000005766_42167cztM0_level2.fits modeM0/AS1A11_032T04_9000005766_42167cztM0_level2_quad_clean.evt
Size (bytes)343,644,48091,166,400
Size327.7 MB 86.9 MB
Events in quadrant A3,592,317602,174
Events in quadrant B2,683,998629,809
Events in quadrant C2,533,752601,914
Events in quadrant D3,486,044544,872

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141772
B0116042
C0110342
D0141882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54511743.192075%
B5451180.330215%
C545120.036691%
D54512073.797468%

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 7214 5452 147 147 2.04% 2.70%
B 7214 5452 7 7 0.10% 0.13%
C 7214 5452 1 1 0.01% 0.02%
D 7214 5452 192 192 2.66% 3.52%

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 15 222 658623 5424.47 593 582 121.3
A 10 83 587354 4836.98 593 582 121.3
A 13 6 25923 208.9 593 582 121.3
B 0 229 163771 1405.5 596 580 116.1
B 0 156 138771 1190.18 596 580 116.1
B 15 35 27270 229.87 596 580 116.1
C 15 214 226866 1636.84 587 588 138.2
C 15 159 15847 110.38 587 588 138.2
C 13 61 3919 24.1 587 588 138.2
D 12 6 621960 4349.39 581 563 142.9
D 1 52 269841 1884.78 581 563 142.9
D 1 47 185100 1291.64 581 563 142.9

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