ASTROSAT CZTI

Data Quality Report

Orbit 31469

Creation date: 2024-06-27T20:28:54.857310
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_029T01_9000004582_31469cztM0_level2.evt modeM0/AS1T04_029T01_9000004582_31469cztM0_level2_quad_clean.evt
Size (bytes)538,485,12086,302,080
Size513.5 MB 82.3 MB
Events in quadrant A3,201,121572,279
Events in quadrant B4,992,359582,928
Events in quadrant C4,189,075511,874
Events in quadrant D3,515,526523,302

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129522
B0184852
C0160613
D0142632

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6053250.413018%
B6053881.453825%
C60524597.584270%
D6052230.380040%

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 7418 6054 0 0 0.00% 0.00%
B 7418 6053 1 1 0.01% 0.02%
C 7417 6052 312 312 4.21% 5.16%
D 7417 6053 11 11 0.15% 0.18%

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 9433 52.1 830 819 165.3
A 3 137 8025 43.58 830 819 165.3
A 0 226 6860 36.54 830 819 165.3
B 6 159 1722142 11183.15 822 805 153.9
B 0 190 23377 146.65 822 805 153.9
B 4 80 18964 117.98 822 805 153.9
C 10 22 679773 3830.18 760 767 177.3
C 0 10 393588 2215.85 760 767 177.3
C 14 238 125269 702.3 760 767 177.3
D 8 195 498625 2684.91 783 764 185.4
D 2 250 31232 164.31 783 764 185.4
D 2 234 20968 108.96 783 764 185.4

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