ASTROSAT CZTI

Data Quality Report

Orbit 16684

Creation date: 2024-06-27T17:26:10.936414
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/AS1A05_012T02_9000002468_16684cztM0_level2.evt modeM0/AS1A05_012T02_9000002468_16684cztM0_level2_quad_clean.evt
Size (bytes)681,984,00087,750,720
Size650.4 MB 83.7 MB
Events in quadrant A5,097,647545,386
Events in quadrant B3,242,478587,548
Events in quadrant C2,908,523565,643
Events in quadrant D8,982,098520,958

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192502
B0134701
C0126811
D0310621

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A626266010.539764%
B6262691.101884%
C6262590.942191%
D6262149823.922070%

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 7278 6264 464 464 6.38% 7.41%
B 7278 6264 11 11 0.15% 0.18%
C 7278 6264 0 0 0.00% 0.00%
D 7278 6264 1277 1277 17.55% 20.39%

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 15 174 2278969 15766.56 715 699 144.5
A 12 96 52284 356.99 715 699 144.5
A 3 1 19736 131.74 715 699 144.5
B 15 35 151427 1061.19 741 722 142.0
B 0 229 106614 745.64 741 722 142.0
B 0 189 63301 440.65 741 722 142.0
C 14 238 110222 660.9 710 713 165.7
C 3 233 26596 156.21 710 713 165.7
C 13 61 5022 26.01 710 713 165.7
D 1 52 4086038 24620.59 683 662 165.9
D 2 16 2031085 12236.38 683 662 165.9
D 10 70 218962 1315.59 683 662 165.9

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