ASTROSAT CZTI

Data Quality Report

Orbit 46689

Creation date: 2024-06-27T23:26:29.515892
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/AS1A13_092T20_9000006254_46689cztM0_level2.fits modeM0/AS1A13_092T20_9000006254_46689cztM0_level2_quad_clean.evt
Size (bytes)497,116,800108,858,240
Size474.1 MB 103.8 MB
Events in quadrant A6,603,410709,342
Events in quadrant B3,968,407736,488
Events in quadrant C3,090,048722,386
Events in quadrant D4,229,784669,287

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239992
B0163382
C0140582
D0173162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65763154.790146%
B65761812.752433%
C6576470.714720%
D65761392.113747%

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 7601 6577 97 97 1.28% 1.47%
B 7601 6577 98 98 1.29% 1.49%
C 7601 6577 23 23 0.30% 0.35%
D 7601 6577 101 101 1.33% 1.54%

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 3722189 24564.06 724 708 151.5
A 0 243 36307 234.98 724 708 151.5
A 9 191 18230 115.66 724 708 151.5
B 10 128 441720 3083.97 723 700 143.0
B 4 171 246523 1718.99 723 700 143.0
B 0 198 150473 1047.33 723 700 143.0
C 12 2 178847 1047.28 720 723 170.1
C 3 233 47893 277.34 720 723 170.1
C 14 254 28821 165.2 720 723 170.1
D 1 52 756294 4160.22 722 701 181.6
D 8 176 249522 1369.98 722 701 181.6
D 11 192 110495 604.51 722 701 181.6

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