ASTROSAT CZTI

Data Quality Report

Orbit 47756

Creation date: 2024-07-27T23:47:46.190459
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/AS1C09_004T04_9000006346_47756cztM0_level2.fits modeM0/AS1C09_004T04_9000006346_47756cztM0_level2_quad_clean.evt
Size (bytes)680,241,600117,866,880
Size648.7 MB 112.4 MB
Events in quadrant A8,534,140803,648
Events in quadrant B5,138,692786,224
Events in quadrant C5,204,496738,786
Events in quadrant D5,708,895705,565

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0304492
B0206170
C0211330
D0223900

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76783744.871060%
B76794936.420107%
C76796238.113036%
D76795036.550332%

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 7678 7678 145 145 1.89% 1.89%
B 7679 7679 196 196 2.55% 2.55%
C 7679 7679 468 468 6.09% 6.09%
D 7679 7679 352 352 4.58% 4.58%

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 10 83 4723896 26799.35 844 824 176.2
A 15 174 311811 1764.58 844 824 176.2
A 9 191 80908 454.41 844 824 176.2
B 12 18 554877 3444.29 825 800 160.9
B 0 200 384695 2386.39 825 800 160.9
B 4 171 190033 1176.32 825 800 160.9
C 12 2 1765885 9383.75 797 800 188.1
C 14 254 306952 1627.6 797 800 188.1
C 12 250 8975 43.46 797 800 188.1
D 12 2 1125253 5436.28 823 796 206.8
D 7 67 521035 2515.14 823 796 206.8
D 12 33 231588 1115.78 823 796 206.8

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