ASTROSAT CZTI

Data Quality Report

Orbit 36209

Creation date: 2022-06-10T09:54:08.047917
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/AS1A11_080T02_9000005176_36209cztM0_level2.evt modeM0/AS1A11_080T02_9000005176_36209cztM0_level2_quad_clean.evt
Size (bytes)767,433,60082,177,920
Size731.9 MB 78.4 MB
Events in quadrant A3,230,537575,171
Events in quadrant B3,709,843574,406
Events in quadrant C11,956,893365,808
Events in quadrant D3,926,294539,965

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135973
B0149402
C0396662
D0156362

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A619160.096915%
B61911592.568244%
C6191383361.912454%
D61911692.729769%

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 8847 6193 2 2 0.02% 0.03%
B 8847 6193 107 107 1.21% 1.73%
C 8847 6193 3420 3420 38.66% 55.22%
D 8847 6193 144 144 1.63% 2.33%

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 15 223 234696 1628.33 709 695 143.7
A 10 83 201972 1400.62 709 695 143.7
A 9 143 33527 228.47 709 695 143.7
B 5 172 687652 5061.78 699 679 135.7
B 0 190 108750 796.29 699 679 135.7
B 0 213 64484 470.13 699 679 135.7
C 4 254 9475774 86387.62 466 470 109.7
C 1 23 237773 2163.52 466 470 109.7
C 15 214 195872 1781.51 466 470 109.7
D 12 6 589408 3480.11 685 664 169.2
D 12 235 170781 1005.57 685 664 169.2
D 2 250 143609 844.96 685 664 169.2

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