ASTROSAT CZTI

Data Quality Report

Orbit 35941

Creation date: 2022-06-09T03:43:30.114042
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/AS1A11_080T01_9000005146_35941cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35941cztM0_level2_quad_clean.evt
Size (bytes)432,702,72080,547,840
Size412.7 MB 76.8 MB
Events in quadrant A2,841,637533,202
Events in quadrant B3,496,294532,837
Events in quadrant C3,017,806514,228
Events in quadrant D3,393,508492,549

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01050
D01051

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011570113
B01374879
C012103131
D013497108

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5231120.229402%
B52431963.738318%
C5232801.529052%
D52391172.233251%

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 7264 5264 7 7 0.10% 0.13%
B 7262 5274 122 122 1.68% 2.31%
C 7264 5268 48 48 0.66% 0.91%
D 7263 5271 88 88 1.21% 1.67%

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 160735 1202.94 664 656 133.1
A 15 169 55115 409.24 664 656 133.1
A 9 143 45250 335.11 664 656 133.1
B 5 172 440780 3545.94 647 633 124.1
B 4 171 258770 2079.62 647 633 124.1
B 0 213 150756 1209.43 647 633 124.1
C 15 214 219716 1509.76 627 634 145.1
C 0 10 186319 1279.61 627 634 145.1
C 0 207 153662 1054.56 627 634 145.1
D 8 195 411664 2716.17 627 611 151.3
D 13 249 210158 1384.65 627 611 151.3
D 7 223 141815 933.05 627 611 151.3

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