ASTROSAT CZTI

Data Quality Report

Orbit 28857

Creation date: 2024-06-27T19:57:14.930672
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/AS1A10_103T08_9000004136_28857cztM0_level2.evt modeM0/AS1A10_103T08_9000004136_28857cztM0_level2_quad_clean.evt
Size (bytes)1,885,392,000314,570,880
Size1.8 GB 300.0 MB
Events in quadrant A9,427,7822,202,978
Events in quadrant B9,458,2202,230,249
Events in quadrant C12,419,5172,109,088
Events in quadrant D24,615,3941,775,621

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03580
B03580
C03580
D03580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0398163
B0396183
C0487523
D0852713

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A175165152.940169%
B175175503.139807%
C175176463.687846%
D17517530730.296284%

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 19432 17516 274 274 1.41% 1.56%
B 19433 17517 279 279 1.44% 1.59%
C 19433 17517 84 84 0.43% 0.48%
D 19433 17517 5224 5224 26.88% 29.82%

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 14 235 1469738 3561.87 2051 2005 412.1
A 13 254 34288 78.34 2051 2005 412.1
A 15 174 27435 61.71 2051 2005 412.1
B 5 172 850343 2216.74 2044 1992 382.7
B 10 246 287468 745.95 2044 1992 382.7
B 5 255 227597 589.51 2044 1992 382.7
C 3 233 4384194 9614.9 1963 1973 455.8
C 14 238 332653 725.54 1963 1973 455.8
C 14 254 32320 66.58 1963 1973 455.8
D 8 195 8162725 19467.57 1760 1712 419.2
D 1 52 7787155 18571.67 1760 1712 419.2
D 7 80 950283 2262.75 1760 1712 419.2

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