ASTROSAT CZTI

Data Quality Report

Orbit 08161

Creation date: 2024-06-27T15:29:03.978020
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/AS1G07_046T01_9000001124_08161cztM0_level2.evt modeM0/AS1G07_046T01_9000001124_08161cztM0_level2_quad_clean.evt
Size (bytes)483,174,72078,122,880
Size460.8 MB 74.5 MB
Events in quadrant A3,113,183488,775
Events in quadrant B3,283,612491,032
Events in quadrant C3,550,487487,530
Events in quadrant D4,259,233459,532

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130742
B0135151
C0142611
D0167021

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6292560.890019%
B6292771.223776%
C6292540.858233%
D62922964.704387%

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 7447 6293 1 1 0.01% 0.02%
B 7447 6293 11 11 0.15% 0.17%
C 7447 6293 0 0 0.00% 0.00%
D 7447 6292 212 212 2.85% 3.37%

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 13 251 26683 159.59 800 785 162.3
A 0 226 7619 42.11 800 785 162.3
A 12 194 7053 38.62 800 785 162.3
B 4 173 52647 345.36 793 777 150.2
B 10 16 38904 253.86 793 777 150.2
B 0 214 34891 227.14 793 777 150.2
C 1 16 556655 3134.54 768 772 177.3
C 13 61 5881 28.81 768 772 177.3
C 3 202 1876 6.23 768 772 177.3
D 12 227 590222 2901.17 757 742 203.2
D 1 52 513848 2525.29 757 742 203.2
D 5 233 98323 480.25 757 742 203.2

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