ASTROSAT CZTI

Data Quality Report

Orbit 24792

Creation date: 2024-06-27T19:09:56.035930
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/AS1T03_197T01_9000003626_24792cztM0_level2.evt modeM0/AS1T03_197T01_9000003626_24792cztM0_level2_quad_clean.evt
Size (bytes)555,580,80098,562,240
Size529.8 MB 94.0 MB
Events in quadrant A3,216,422654,990
Events in quadrant B6,756,053599,515
Events in quadrant C3,282,998635,966
Events in quadrant D3,111,279623,099

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138946
B02452123
C0141356
D0139174

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6756270.399645%
B6755160323.730570%
C6756711.050918%
D6758150.221959%

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 8833 6760 0 0 0.00% 0.00%
B 8833 6760 1353 1353 15.32% 20.01%
C 8833 6760 2 2 0.02% 0.03%
D 8834 6761 0 0 0.00% 0.00%

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 13 254 10290 56.45 834 815 167.8
A 3 137 7671 40.85 834 815 167.8
A 0 226 7007 36.89 834 815 167.8
B 3 64 3862135 29000.16 702 685 133.2
B 0 189 110780 826.83 702 685 133.2
B 12 111 16219 116.66 702 685 133.2
C 14 238 127530 682.75 799 803 185.6
C 2 16 26579 138.87 799 803 185.6
C 10 91 9261 45.57 799 803 185.6
D 8 195 44580 222.87 807 783 196.5
D 2 234 24397 120.16 807 783 196.5
D 1 52 19929 97.43 807 783 196.5

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