ASTROSAT CZTI

Data Quality Report

Orbit 14839

Creation date: 2024-06-27T17:00:14.667626
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/AS1C03_005T02_9000002192_14839cztM0_level2.evt modeM0/AS1C03_005T02_9000002192_14839cztM0_level2_quad_clean.evt
Size (bytes)456,027,84091,828,800
Size434.9 MB 87.6 MB
Events in quadrant A3,181,980588,894
Events in quadrant B3,562,598582,454
Events in quadrant C3,369,236578,650
Events in quadrant D3,242,104564,419

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138832
B0148721
C0139291
D0141581

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6692711.060968%
B66921201.793186%
C6692410.612672%
D6692510.762104%

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 7378 6694 0 0 0.00% 0.00%
B 7378 6694 26 26 0.35% 0.39%
C 7378 6694 0 0 0.00% 0.00%
D 7378 6694 6 6 0.08% 0.09%

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 12 189 42926 260.36 801 787 161.9
A 13 248 40153 243.22 801 787 161.9
A 9 143 8955 50.47 801 787 161.9
B 3 64 168756 1126.95 791 770 149.1
B 0 189 73342 486.86 791 770 149.1
B 0 229 72492 481.15 791 770 149.1
C 3 233 345250 1970.49 770 775 174.8
C 15 176 10053 53.07 770 775 174.8
C 7 247 6770 34.29 770 775 174.8
D 7 254 159026 835.12 779 759 189.5
D 7 38 36858 190.48 779 759 189.5
D 2 234 25308 129.54 779 759 189.5

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