ASTROSAT CZTI

Data Quality Report

Orbit 46751

Creation date: 2024-06-27T23:27:11.624593
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/AS1A13_092T17_9000006262_46751cztM0_level2.fits modeM0/AS1A13_092T17_9000006262_46751cztM0_level2_quad_clean.evt
Size (bytes)487,039,680105,310,080
Size464.5 MB 100.4 MB
Events in quadrant A6,594,738690,179
Events in quadrant B3,615,770732,019
Events in quadrant C2,968,278712,354
Events in quadrant D4,352,623607,478

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237842
B0150522
C0134462
D0175112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64093265.086597%
B64091612.512092%
C6409270.421283%
D64094196.537681%

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 7545 6410 159 159 2.11% 2.48%
B 7545 6410 55 55 0.73% 0.86%
C 7545 6411 7 7 0.09% 0.11%
D 7545 6411 380 380 5.04% 5.93%

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 3436926 22932.58 718 703 149.8
A 9 191 155222 1031.23 718 703 149.8
A 3 7 115536 766.37 718 703 149.8
B 3 112 182415 1270.11 728 708 143.1
B 4 171 127287 884.77 728 708 143.1
B 8 234 106589 740.1 728 708 143.1
C 14 254 90934 529.41 717 720 170.4
C 3 233 46816 270.51 717 720 170.4
C 12 2 25518 145.52 717 720 170.4
D 13 138 613346 3580.83 679 659 171.1
D 13 249 421144 2457.51 679 659 171.1
D 2 249 312672 1823.55 679 659 171.1

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