ASTROSAT CZTI

Data Quality Report

Orbit 31419

Creation date: 2024-06-27T20:28:04.203102
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/AS1A10_094T29_9000004564_31419cztM0_level2.evt modeM0/AS1A10_094T29_9000004564_31419cztM0_level2_quad_clean.evt
Size (bytes)117,417,60028,532,160
Size112.0 MB 27.2 MB
Events in quadrant A692,864193,125
Events in quadrant B1,155,348190,816
Events in quadrant C732,618187,792
Events in quadrant D873,419183,691

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029661
B044811
C030591
D035661

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A145450.343879%
B1454221.513067%
C1454130.894085%
D1453171.169993%

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 1454 1454 0 0 0.00% 0.00%
B 1454 1454 2 2 0.14% 0.14%
C 1454 1454 1 1 0.07% 0.07%
D 1453 1453 11 11 0.76% 0.76%

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 13 254 2767 68.14 179 175 38.0
A 3 137 1904 45.45 179 175 38.0
A 0 226 1581 36.96 179 175 38.0
B 6 159 395513 10829.97 177 173 36.5
B 12 18 22445 610.12 177 173 36.5
B 0 199 10609 285.88 177 173 36.5
C 3 233 35808 859.03 167 167 41.5
C 14 238 27997 670.77 167 167 41.5
C 0 10 6350 149.03 167 167 41.5
D 8 195 102115 2435.77 166 161 41.9
D 1 52 56695 1350.64 166 161 41.9
D 12 218 31549 749.89 166 161 41.9

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