ASTROSAT CZTI

Data Quality Report

Orbit 26575

Creation date: 2024-06-27T19:30:37.653303
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_095T02_9000003846_26575cztM0_level2.evt modeM0/AS1A09_095T02_9000003846_26575cztM0_level2_quad_clean.evt
Size (bytes)678,600,00098,982,720
Size647.2 MB 94.4 MB
Events in quadrant A3,162,408713,545
Events in quadrant B3,379,467717,436
Events in quadrant C3,279,604677,806
Events in quadrant D10,334,712479,564

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129980
B0137220
C0134890
D0347300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5845641.094953%
B5846891.522408%
C58461061.813206%
D5845297350.863986%

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 7155 5845 1 1 0.01% 0.02%
B 7156 5846 16 16 0.22% 0.27%
C 7156 5846 7 7 0.10% 0.12%
D 7154 5844 2616 2616 36.57% 44.76%

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 35744 224.43 805 793 155.7
A 12 96 10362 61.45 805 793 155.7
A 13 254 9002 52.71 805 793 155.7
B 3 112 155533 1073.38 790 774 144.2
B 3 64 82099 564.05 790 774 144.2
B 0 245 18915 125.82 790 774 144.2
C 3 233 149920 865.8 753 760 172.3
C 14 238 125316 722.98 753 760 172.3
C 4 254 65152 373.76 753 760 172.3
D 7 80 6285483 44969.63 585 571 139.8
D 1 52 1488032 10643.04 585 571 139.8
D 12 233 178741 1274.84 585 571 139.8

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