ASTROSAT CZTI

Data Quality Report

Orbit 46721

Creation date: 2024-06-27T23:26:49.940748
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_092T09_9000006258_46721cztM0_level2.fits modeM0/AS1A13_092T09_9000006258_46721cztM0_level2_quad_clean.evt
Size (bytes)467,280,000104,978,880
Size445.6 MB 100.1 MB
Events in quadrant A6,410,804683,766
Events in quadrant B3,297,090730,479
Events in quadrant C3,365,017693,445
Events in quadrant D3,736,148632,148

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231182
B0140372
C0144842
D0155902

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62882944.675573%
B62881322.099237%
C62871792.847145%
D62871882.990297%

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 7503 6289 190 190 2.53% 3.02%
B 7503 6289 22 22 0.29% 0.35%
C 7502 6288 142 142 1.89% 2.26%
D 7502 6288 148 148 1.97% 2.35%

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 3368752 23403.54 696 683 143.9
A 9 191 138870 960.21 696 683 143.9
A 15 235 90283 622.6 696 683 143.9
B 4 171 202930 1464.05 709 687 138.1
B 3 112 118420 852.28 709 687 138.1
B 0 183 56601 404.77 709 687 138.1
C 12 2 510261 3118.66 693 699 163.4
C 15 208 48980 295.49 693 699 163.4
C 14 254 27027 161.13 693 699 163.4
D 13 249 388657 2218.54 688 669 174.9
D 7 96 219969 1253.97 688 669 174.9
D 1 52 141821 807.11 688 669 174.9

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