ASTROSAT CZTI

Data Quality Report

Orbit 47839

Creation date: 2024-08-02T15:20:43.514921
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/AS1T05_216T01_9000006356_47839cztM0_level2.fits modeM0/AS1T05_216T01_9000006356_47839cztM0_level2_quad_clean.evt
Size (bytes)557,614,080105,765,120
Size531.8 MB 100.9 MB
Events in quadrant A6,687,536714,394
Events in quadrant B3,824,881736,318
Events in quadrant C3,009,281725,662
Events in quadrant D6,613,302571,331

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249561
B0154551
C0136731
D0242041

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65253024.628352%
B65263024.627643%
C65261161.777505%
D6526112117.177444%

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 7530 6525 1 1 0.01% 0.02%
B 7531 6526 117 117 1.55% 1.79%
C 7531 6526 18 18 0.24% 0.28%
D 7531 6526 1099 1099 14.59% 16.84%

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 10 83 3768711 24044.16 754 737 156.7
A 3 137 8674 50.65 754 737 156.7
A 0 243 6133 34.43 754 737 156.7
B 0 186 475237 3190.09 754 732 148.7
B 4 21 276157 1851.68 754 732 148.7
B 7 219 26391 172.5 754 732 148.7
C 14 254 89654 506.05 746 751 175.7
C 3 233 6264 31.38 746 751 175.7
C 13 61 4888 23.55 746 751 175.7
D 12 2 2409304 13607.07 702 681 177.0
D 2 249 922970 5210.3 702 681 177.0
D 2 37 235897 1328.81 702 681 177.0

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