ASTROSAT CZTI

Data Quality Report

Orbit 38667

Creation date: 2024-06-27T21:54:52.273470
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/AS1A12_054T01_9000005392_38667cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38667cztM0_level2_quad_clean.evt
Size (bytes)371,638,08086,163,840
Size354.4 MB 82.2 MB
Events in quadrant A2,881,226596,318
Events in quadrant B2,410,360612,141
Events in quadrant C2,730,990570,626
Events in quadrant D5,338,538473,542

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114803
B0104482
C0111332
D0193932

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5082270.531287%
B5082120.236128%
C5082721.416765%
D508371113.987802%

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 7085 5083 21 21 0.30% 0.41%
B 7085 5083 8 8 0.11% 0.16%
C 7085 5083 73 73 1.03% 1.44%
D 7086 5084 703 703 9.92% 13.83%

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 10 83 383819 3192.75 588 576 120.0
A 13 248 207588 1724.59 588 576 120.0
A 9 143 8842 68.86 588 576 120.0
B 5 200 32461 284.61 580 565 112.1
B 5 184 28551 249.73 580 565 112.1
B 5 172 21701 188.6 580 565 112.1
C 15 214 206274 1564.67 565 569 131.5
C 15 208 133353 1010.01 565 569 131.5
C 5 250 133000 1007.32 565 569 131.5
D 9 49 1856662 14054.47 540 524 132.1
D 12 227 442676 3347.92 540 524 132.1
D 10 118 220594 1666.35 540 524 132.1

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