ASTROSAT CZTI

Data Quality Report

Orbit 28177

Creation date: 2024-06-27T19:48:53.360746
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_073T05_9000004068_28177cztM0_level2.evt modeM0/AS1A10_073T05_9000004068_28177cztM0_level2_quad_clean.evt
Size (bytes)592,822,080100,918,080
Size565.4 MB 96.2 MB
Events in quadrant A3,270,000666,968
Events in quadrant B4,452,871656,762
Events in quadrant C3,526,687633,332
Events in quadrant D6,231,891613,705

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143500
B0179160
C0151830
D0233420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6970600.860832%
B69704876.987088%
C69701952.797704%
D69706909.899570%

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 8605 6972 0 0 0.00% 0.00%
B 8605 6970 242 242 2.81% 3.47%
C 8605 6970 18 18 0.21% 0.26%
D 8605 6970 560 560 6.51% 8.03%

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 11870 64.14 845 827 172.2
A 0 13 8485 44.48 845 827 172.2
A 3 137 8474 44.42 845 827 172.2
B 10 245 818845 5207.67 816 792 157.1
B 10 246 355894 2260.55 816 792 157.1
B 0 230 24830 153.02 816 792 157.1
C 14 238 131006 687.38 807 809 189.4
C 15 208 121739 638.45 807 809 189.4
C 3 233 103602 542.7 807 809 189.4
D 1 52 1457279 7813.78 784 762 186.4
D 13 104 1091064 5849.15 784 762 186.4
D 2 250 358681 1920.13 784 762 186.4

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