ASTROSAT CZTI

Data Quality Report

Orbit 40331

Creation date: 2024-06-27T22:15:00.936254
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_056T02_9000005538_40331cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40331cztM0_level2_quad_clean.evt
Size (bytes)341,282,88090,014,400
Size325.5 MB 85.8 MB
Events in quadrant A3,508,535608,948
Events in quadrant B3,158,244628,073
Events in quadrant C2,523,105601,857
Events in quadrant D3,065,853546,670

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135183
B0125302
C0102672
D0122672

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A48482394.929868%
B48481553.197195%
C4848110.226898%
D48481202.475248%

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 6971 4849 214 214 3.07% 4.41%
B 6971 4849 118 118 1.69% 2.43%
C 6971 4849 10 10 0.14% 0.21%
D 6970 4848 119 119 1.71% 2.45%

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 13 248 814922 7072.05 567 557 115.2
A 10 83 448042 3886.02 567 557 115.2
A 12 189 18269 153.81 567 557 115.2
B 3 112 323528 2974.85 569 555 108.6
B 4 171 248377 2282.64 569 555 108.6
B 0 245 149190 1369.05 569 555 108.6
C 15 214 221357 1719.3 557 562 128.4
C 14 254 67782 523.43 557 562 128.4
C 0 10 55646 428.93 557 562 128.4
D 12 227 699017 5280.5 548 534 132.3
D 12 79 89898 675.59 548 534 132.3
D 3 14 52521 393.02 548 534 132.3

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