ASTROSAT CZTI

Data Quality Report

Orbit 34960

Creation date: 2022-03-17T07:11:37.152314
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_047T09_9000005010_34960cztM0_level2.evt modeM0/AS1A11_047T09_9000005010_34960cztM0_level2_quad_clean.evt
Size (bytes)415,972,80059,094,720
Size396.7 MB 56.4 MB
Events in quadrant A2,375,018373,082
Events in quadrant B3,836,715349,453
Events in quadrant C2,799,423368,159
Events in quadrant D3,243,509344,584

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103633
B0146932
C0112762
D0129012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A504880.158479%
B504850610.023772%
C5048811.604596%
D50481512.991284%

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 7081 5049 0 0 0.00% 0.00%
B 7081 5049 425 425 6.00% 8.42%
C 7081 5049 69 69 0.97% 1.37%
D 7081 5049 141 141 1.99% 2.79%

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 67585 564.05 587 577 118.8
A 15 223 18829 153.64 587 577 118.8
A 13 6 12640 101.54 587 577 118.8
B 5 172 1548429 14329.13 562 548 108.0
B 0 190 27905 253.25 562 548 108.0
B 4 232 20867 188.1 562 548 108.0
C 0 10 242555 1813.2 573 577 133.5
C 15 214 211815 1582.85 573 577 133.5
C 0 207 53249 394.68 573 577 133.5
D 8 195 483393 3504.21 561 546 137.8
D 13 249 331065 2398.71 561 546 137.8
D 1 47 75533 544.21 561 546 137.8

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