ASTROSAT CZTI

Data Quality Report

Orbit 36554

Creation date: 2024-06-27T21:28:20.678758
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_049T02_9000005220_36554cztM0_level2.evt modeM0/AS1A11_049T02_9000005220_36554cztM0_level2_quad_clean.evt
Size (bytes)169,876,80019,497,600
Size162.0 MB 18.6 MB
Events in quadrant A1,521,474110,288
Events in quadrant B945,802126,127
Events in quadrant C1,019,657120,771
Events in quadrant D1,550,319117,941

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A054872
B037031
C039491
D057051

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A155428218.146718%
B1554342.187902%
C1554684.375804%
D1554654.182754%

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 3196 1555 194 194 6.07% 12.48%
B 3196 1555 16 16 0.50% 1.03%
C 3196 1555 55 55 1.72% 3.54%
D 3196 1555 38 38 1.19% 2.44%

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 15 223 693053 18484.98 174 171 37.5
A 10 83 83420 2220.95 174 171 37.5
A 13 248 66203 1761.63 174 171 37.5
B 0 219 106568 2835.84 184 180 37.5
B 4 171 47845 1270.54 184 180 37.5
B 5 172 19087 503.98 184 180 37.5
C 0 10 195871 4517.82 177 178 43.3
C 15 214 67957 1564.76 177 178 43.3
C 14 254 43119 991.35 177 178 43.3
D 12 235 701492 15317.69 180 174 45.8
D 13 249 47567 1035.12 180 174 45.8
D 2 137 23880 517.77 180 174 45.8

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