ASTROSAT CZTI

Data Quality Report

Orbit 45639

Creation date: 2024-06-27T23:14:30.208941
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_071T08_9000006114_45639cztM0_level2.fits modeM0/AS1A13_071T08_9000006114_45639cztM0_level2_quad_clean.evt
Size (bytes)627,477,120123,969,600
Size598.4 MB 118.2 MB
Events in quadrant A7,045,699839,041
Events in quadrant B4,352,262849,286
Events in quadrant C3,770,504814,959
Events in quadrant D7,451,708705,047

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265532
B0183420
C0170300
D0276720

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78401632.079082%
B78402022.576531%
C7840660.841837%
D78416898.787144%

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 7840 7840 41 41 0.52% 0.52%
B 7840 7840 134 134 1.71% 1.71%
C 7840 7840 51 51 0.65% 0.65%
D 7841 7841 535 535 6.82% 6.82%

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 3221501 17810.48 862 845 180.8
A 12 189 256245 1412.38 862 845 180.8
A 10 248 118922 652.98 862 845 180.8
B 5 172 484059 2870.4 860 832 168.3
B 3 112 182508 1079.17 860 832 168.3
B 12 3 60829 356.39 860 832 168.3
C 14 254 445398 2252.43 840 845 197.4
C 2 14 17140 82.56 840 845 197.4
C 12 2 12061 56.83 840 845 197.4
D 11 241 1422434 6866.42 818 791 207.0
D 12 32 1194174 5763.94 818 791 207.0
D 1 52 456275 2199.95 818 791 207.0

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