ASTROSAT CZTI

Data Quality Report

Orbit 36753

Creation date: 2024-06-27T21:31:12.523215
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_101T01_9000005238_36753cztM0_level2.evt modeM0/AS1A11_101T01_9000005238_36753cztM0_level2_quad_clean.evt
Size (bytes)357,341,76074,378,880
Size340.8 MB 70.9 MB
Events in quadrant A2,487,394475,997
Events in quadrant B2,759,802499,289
Events in quadrant C2,645,019479,112
Events in quadrant D2,594,364452,195

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104053
B0112752
C0107602
D0108492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A492950.101440%
B49291072.170826%
C4929210.426050%
D4929350.710083%

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 7021 4930 1 1 0.01% 0.02%
B 7021 4930 60 60 0.85% 1.22%
C 7021 4930 19 19 0.27% 0.39%
D 7021 4930 32 32 0.46% 0.65%

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 203681 1732.76 584 574 117.2
A 9 143 17747 146.51 584 574 117.2
A 13 254 6894 53.92 584 574 117.2
B 4 171 172493 1556.32 585 571 110.5
B 5 172 87352 785.58 585 571 110.5
B 0 213 75187 675.46 585 571 110.5
C 15 214 211718 1595.48 570 576 132.3
C 14 254 131553 989.72 570 576 132.3
C 0 10 44864 334.66 570 576 132.3
D 13 249 179410 1289.71 563 546 138.7
D 2 152 82982 594.41 563 546 138.7
D 13 171 63648 455.0 563 546 138.7

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