ASTROSAT CZTI

Data Quality Report

Orbit 26418

Creation date: 2024-06-27T19:28:46.791189
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/AS1A09_127T03_9000003820_26418cztM0_level2.evt modeM0/AS1A09_127T03_9000003820_26418cztM0_level2_quad_clean.evt
Size (bytes)588,749,76087,344,640
Size561.5 MB 83.3 MB
Events in quadrant A3,065,102575,645
Events in quadrant B3,367,227589,055
Events in quadrant C3,727,891552,287
Events in quadrant D7,246,688491,096

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129860
B0138500
C0149390
D0259530

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6259230.367471%
B6259911.453906%
C62592113.371146%
D6259104416.679981%

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 7514 6260 0 0 0.00% 0.00%
B 7514 6260 35 35 0.47% 0.56%
C 7514 6260 80 80 1.06% 1.28%
D 7514 6260 817 817 10.87% 13.05%

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 11837 70.49 791 776 156.9
A 13 254 11118 65.91 791 776 156.9
A 3 137 6891 38.97 791 776 156.9
B 5 172 135591 922.71 794 777 146.1
B 0 244 81063 549.5 794 777 146.1
B 0 230 23206 153.51 794 777 146.1
C 3 233 370821 2104.31 762 769 175.9
C 2 16 235203 1333.12 762 769 175.9
C 14 238 122882 694.4 762 769 175.9
D 1 52 3179069 18722.58 714 698 169.8
D 7 80 689718 4058.76 714 698 169.8
D 12 233 429046 2523.24 714 698 169.8

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