ASTROSAT CZTI

Data Quality Report

Orbit 34711

Creation date: 2022-03-02T16:11:44.431559
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/AS1A09_038T36_9000004976_34711cztM0_level2.evt modeM0/AS1A09_038T36_9000004976_34711cztM0_level2_quad_clean.evt
Size (bytes)504,665,280116,406,720
Size481.3 MB 111.0 MB
Events in quadrant A3,901,277776,646
Events in quadrant B3,150,692823,412
Events in quadrant C3,089,889809,450
Events in quadrant D4,791,938753,850

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146683
B0124432
C0121922
D0180282

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51685079.810372%
B51681042.012384%
C5168931.799536%
D51681122.167183%

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 7231 5169 474 474 6.56% 9.17%
B 7231 5169 64 64 0.89% 1.24%
C 7231 5169 66 66 0.91% 1.28%
D 7231 5169 97 97 1.34% 1.88%

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 15 169 1291605 10108.57 657 647 127.7
A 10 83 42537 328.01 657 647 127.7
A 9 143 11539 85.28 657 647 127.7
B 5 172 279600 2265.0 671 656 123.2
B 0 189 104685 844.71 671 656 123.2
B 4 171 69791 561.37 671 656 123.2
C 15 214 220506 1444.56 665 672 152.2
C 0 10 211158 1383.13 665 672 152.2
C 15 159 22947 146.37 665 672 152.2
D 8 195 1537401 8779.37 656 644 175.0
D 13 249 209726 1194.47 656 644 175.0
D 12 227 169202 962.96 656 644 175.0

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