ASTROSAT CZTI

Data Quality Report

Orbit 31507

Creation date: 2024-06-27T20:29:26.568297
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/AS1T04_030T01_9000004588_31507cztM0_level2.evt modeM0/AS1T04_030T01_9000004588_31507cztM0_level2_quad_clean.evt
Size (bytes)2,042,303,040215,222,400
Size1.9 GB 205.3 MB
Events in quadrant A17,914,3331,184,470
Events in quadrant B14,093,2181,451,079
Events in quadrant C17,146,1781,288,409
Events in quadrant D11,519,9171,383,380

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0650153
B0548043
C0625643
D0457263

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03560
B03560
C03560
D03560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17529463226.424782%
B175295152.937988%
C17529351920.075304%
D175294812.744024%

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 19303 17528 2770 2770 14.35% 15.80%
B 19304 17529 162 162 0.84% 0.92%
C 19304 17530 2610 2610 13.52% 14.89%
D 19304 17530 331 331 1.71% 1.89%

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 0 13 10452377 29444.15 1775 1742 354.9
A 15 174 609838 1713.28 1775 1742 354.9
A 13 254 27673 73.06 1775 1742 354.9
B 6 159 4931806 12456.03 2080 2032 395.8
B 5 172 574844 1447.32 2080 2032 395.8
B 4 80 104316 258.44 2080 2032 395.8
C 3 233 8523698 19458.25 1874 1882 438.0
C 10 22 888653 2024.8 1874 1882 438.0
C 14 238 299405 679.35 1874 1882 438.0
D 8 195 1900753 3931.71 2023 1966 482.9
D 2 250 581660 1200.34 2023 1966 482.9
D 12 79 505400 1042.43 2023 1966 482.9

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