ASTROSAT CZTI

Data Quality Report

Orbit 46635

Creation date: 2024-06-27T23:25:40.909678
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_092T16_9000006244_46635cztM0_level2.fits modeM0/AS1A13_092T16_9000006244_46635cztM0_level2_quad_clean.evt
Size (bytes)496,411,200108,031,680
Size473.4 MB 103.0 MB
Events in quadrant A6,397,422705,266
Events in quadrant B3,484,864743,190
Events in quadrant C3,077,733721,386
Events in quadrant D4,899,838637,499

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232522
B0147362
C0141102
D0191472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66492453.684765%
B66491231.849902%
C6649320.481275%
D66493064.602196%

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 7774 6650 30 30 0.39% 0.45%
B 7774 6650 33 33 0.42% 0.50%
C 7774 6650 16 16 0.21% 0.24%
D 7774 6650 197 197 2.53% 2.96%

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 3470127 22734.97 736 722 152.6
A 15 235 40618 261.44 736 722 152.6
A 13 254 10205 62.14 736 722 152.6
B 5 32 148401 1000.46 744 721 147.6
B 0 198 99815 671.31 744 721 147.6
B 0 189 87788 589.83 744 721 147.6
C 14 254 104855 605.23 730 734 172.0
C 15 208 82935 477.81 730 734 172.0
C 12 249 19931 111.59 730 734 172.0
D 1 52 1067092 5896.45 712 690 180.9
D 12 128 318840 1759.15 712 690 180.9
D 13 249 210584 1160.57 712 690 180.9

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