ASTROSAT CZTI

Data Quality Report

Orbit 16258

Creation date: 2024-06-27T17:20:04.095916
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/AS1T02_112T01_9000002390_16258cztM0_level2.evt modeM0/AS1T02_112T01_9000002390_16258cztM0_level2_quad_clean.evt
Size (bytes)535,541,76099,060,480
Size510.7 MB 94.5 MB
Events in quadrant A3,496,517635,736
Events in quadrant B3,952,475638,201
Events in quadrant C3,568,353632,351
Events in quadrant D4,728,850608,071

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148652
B0161411
C0148771
D0189041

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6971680.975470%
B69711041.491895%
C6971931.334098%
D69711472.108736%

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 7427 6973 29 29 0.39% 0.42%
B 7427 6973 27 27 0.36% 0.39%
C 7427 6973 3 3 0.04% 0.04%
D 7427 6973 76 76 1.02% 1.09%

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 15 174 162726 926.01 861 844 174.8
A 9 143 14960 80.74 861 844 174.8
A 0 226 7708 39.26 861 844 174.8
B 7 220 203610 1230.65 855 835 164.8
B 4 216 104692 630.31 855 835 164.8
B 0 189 60254 360.62 855 835 164.8
C 3 233 140114 726.63 820 826 191.7
C 14 238 128265 664.81 820 826 191.7
C 7 247 53259 273.53 820 826 191.7
D 1 52 1354907 6649.56 831 808 203.6
D 12 233 97507 474.86 831 808 203.6
D 10 70 66449 322.34 831 808 203.6

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