ASTROSAT CZTI

Data Quality Report

Orbit 12945

Creation date: 2024-06-27T16:34:14.460545
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/AS1A04_115T02_9000001900_12945cztM0_level2.evt modeM0/AS1A04_115T02_9000001900_12945cztM0_level2_quad_clean.evt
Size (bytes)646,205,76085,438,080
Size616.3 MB 81.5 MB
Events in quadrant A3,764,048538,847
Events in quadrant B5,412,390508,936
Events in quadrant C3,336,133544,483
Events in quadrant D6,563,394486,836

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159733
B0209042
C0148712
D0246222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7291811.110959%
B7291122516.801536%
C7291310.425182%
D729198313.482376%

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 7517 7294 3 3 0.04% 0.04%
B 7517 7294 529 529 7.04% 7.25%
C 7517 7294 0 0 0.00% 0.00%
D 7517 7294 765 765 10.18% 10.49%

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 1 162 143264 789.1 876 855 180.5
A 1 178 67972 371.9 876 855 180.5
A 1 161 59357 324.16 876 855 180.5
B 4 239 2215396 14872.19 774 756 148.9
B 3 64 114641 764.78 774 756 148.9
B 0 214 26176 170.71 774 756 148.9
C 13 61 6190 26.76 855 858 199.2
C 8 222 3446 12.99 855 858 199.2
C 3 202 2099 6.23 855 858 199.2
D 1 52 3308795 16522.62 815 789 200.2
D 8 195 102638 508.71 815 789 200.2
D 10 157 38050 186.11 815 789 200.2

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