ASTROSAT CZTI

Data Quality Report

Orbit 34946

Creation date: 2022-03-16T08:23:18.691471
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_34946cztM0_level2.evt modeM0/AS1A11_047T09_9000005010_34946cztM0_level2_quad_clean.evt
Size (bytes)495,198,72052,899,840
Size472.3 MB 50.4 MB
Events in quadrant A4,957,703264,644
Events in quadrant B3,381,541327,822
Events in quadrant C2,644,581335,333
Events in quadrant D3,664,780313,481

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179543
B0134722
C0108992
D0142292

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5134124824.308531%
B51343176.174523%
C5134440.857032%
D51341112.162057%

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 9232 5135 1130 1130 12.24% 22.01%
B 9232 5136 234 234 2.53% 4.56%
C 9232 5136 38 38 0.41% 0.74%
D 9232 5136 88 88 0.95% 1.71%

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 2961348 30195.09 488 478 98.1
A 10 83 46949 473.91 488 478 98.1
A 7 16 43819 441.99 488 478 98.1
B 5 172 955215 8615.62 574 560 110.8
B 4 232 123047 1105.43 574 560 110.8
B 0 190 18808 164.69 574 560 110.8
C 15 214 217887 1625.46 574 579 133.7
C 0 10 146263 1089.71 574 579 133.7
C 12 250 18987 137.69 574 579 133.7
D 8 195 520141 3744.99 567 552 138.7
D 2 31 315277 2268.41 567 552 138.7
D 13 249 170425 1224.38 567 552 138.7

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