ASTROSAT CZTI

Data Quality Report

Orbit 12260

Creation date: 2024-06-27T16:24:36.661458
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/AS1G08_006T04_9000001812_12260cztM0_level2.evt modeM0/AS1G08_006T04_9000001812_12260cztM0_level2_quad_clean.evt
Size (bytes)692,352,000117,204,480
Size660.3 MB 111.8 MB
Events in quadrant A8,691,403662,968
Events in quadrant B4,483,221835,879
Events in quadrant C3,744,184829,215
Events in quadrant D3,643,501801,440

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300141
B0172530
C0151080
D0147980

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5997234839.152910%
B59973405.669501%
C59971492.484576%
D59971722.868101%

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 7298 5999 1914 1914 26.23% 31.91%
B 7298 5999 172 172 2.36% 2.87%
C 7298 5999 97 97 1.33% 1.62%
D 7298 5999 95 95 1.30% 1.58%

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 14 237 4578753 36591.06 614 601 125.1
A 8 15 763139 6094.62 614 601 125.1
A 13 251 543768 4341.28 614 601 125.1
B 4 239 1068322 7939.28 733 718 134.5
B 4 206 160081 1185.11 733 718 134.5
B 11 51 136461 1009.46 733 718 134.5
C 15 208 909956 5625.28 711 714 161.6
C 4 175 28749 173.45 711 714 161.6
C 3 233 9827 56.38 711 714 161.6
D 1 52 440132 2559.08 719 700 171.7
D 10 199 153791 891.54 719 700 171.7
D 10 253 66845 385.2 719 700 171.7

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