ASTROSAT CZTI

Data Quality Report

Orbit 37307

Creation date: 2024-06-27T21:38:15.277819
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_030T02_9000005310_37307cztM0_level2.evt modeM0/AS1A11_030T02_9000005310_37307cztM0_level2_quad_clean.evt
Size (bytes)125,677,44012,130,560
Size119.9 MB 11.6 MB
Events in quadrant A867,11164,128
Events in quadrant B873,58864,481
Events in quadrant C872,26562,147
Events in quadrant D1,083,85859,807

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A035082
B036061
C035311
D042821

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1576150.951777%
B1576261.649746%
C1576171.078680%
D1576543.426396%

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 3219 1577 6 6 0.19% 0.38%
B 3219 1577 15 15 0.47% 0.95%
C 3219 1577 18 18 0.56% 1.14%
D 3219 1577 34 34 1.06% 2.16%

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 107549 2786.76 183 179 38.5
A 9 143 32729 844.83 183 179 38.5
A 13 248 10250 261.39 183 179 38.5
B 5 172 56963 1571.45 179 175 36.1
B 0 213 54657 1507.64 179 175 36.1
B 5 255 19298 529.18 179 175 36.1
C 0 10 80391 1860.51 177 177 43.1
C 15 214 69031 1597.02 177 177 43.1
C 10 49 26779 617.02 177 177 43.1
D 13 249 184104 4134.85 176 171 44.5
D 2 249 131251 2946.7 176 171 44.5
D 5 222 39930 893.79 176 171 44.5

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