ASTROSAT CZTI

Data Quality Report

Orbit 41085

Creation date: 2024-06-27T22:24:15.644648
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_095T02_9000005596_41085cztM0_level2.fits modeM0/AS1A12_095T02_9000005596_41085cztM0_level2_quad_clean.evt
Size (bytes)328,717,44086,051,520
Size313.5 MB 82.1 MB
Events in quadrant A3,181,558588,217
Events in quadrant B2,693,439598,882
Events in quadrant C2,603,901560,032
Events in quadrant D3,298,823507,186

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129333
B0114272
C0108262
D0131732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5011300.598683%
B5011290.578727%
C5011801.596488%
D50112575.128717%

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 7134 5012 9 9 0.13% 0.18%
B 7134 5012 18 18 0.25% 0.36%
C 7134 5012 65 65 0.91% 1.30%
D 7134 5012 211 211 2.96% 4.21%

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 543454 4689.28 562 552 115.8
A 12 189 392110 3382.06 562 552 115.8
A 13 248 37155 316.16 562 552 115.8
B 0 186 225653 2084.49 558 543 108.0
B 5 32 85249 784.37 558 543 108.0
B 5 255 72660 667.79 558 543 108.0
C 15 214 213339 1668.63 546 550 127.5
C 0 10 190864 1492.39 546 550 127.5
C 14 254 61285 476.27 546 550 127.5
D 12 233 373565 2824.3 540 525 132.1
D 13 249 248042 1873.96 540 525 132.1
D 2 249 158528 1196.24 540 525 132.1

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