ASTROSAT CZTI

Data Quality Report

Orbit 20211115_A11_080T02_9000004768_level2

Creation date: 2021-11-20T10:36:38.892792
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_9000004768cztM0_level2_bc.evt modeM0/AS1A11_080T02_9000004768cztM0_level2_quad_clean.evt
Size (bytes)6,877,955,5201,697,613,120
Size6.4 GB 1.6 GB
Events in quadrant A28,236,27510,844,829
Events in quadrant B49,061,03310,701,782
Events in quadrant C34,523,23510,735,998
Events in quadrant D87,496,74010,069,878

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05110
B05110
C05110
D05120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027000
B027000
C027000
D027000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02688020
B03755340
C02904950
D04733370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1323491680.126937%
B13235094317.125803%
C13235219301.458233%
D13235375745.722575%

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 188376 132360 1 1 0.00% 0.00%
B 188376 132351 373 373 0.20% 0.28%
C 188376 132352 382 382 0.20% 0.29%
D 188376 132350 1432 1432 0.76% 1.08%

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 13 6 229697 142.54 7143 7040 1562.1
A 13 254 227638 141.22 7143 7040 1562.1
A 14 234 128925 78.03 7143 7040 1562.1
B 5 172 10640747 7825.88 6938 6797 1358.8
B 0 219 4115321 3023.6 6938 6797 1358.8
B 5 31 1807929 1325.51 6938 6797 1358.8
C 0 10 2404314 1531.3 6917 6883 1565.6
C 9 187 1928978 1227.69 6917 6883 1565.6
C 1 241 973077 617.13 6917 6883 1565.6
D 8 195 30164408 17607.85 6787 6646 1712.7
D 10 203 8313237 4849.87 6787 6646 1712.7
D 2 250 4401725 2566.1 6787 6646 1712.7

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