ASTROSAT CZTI

Data Quality Report

Orbit 27731

Creation date: 2024-06-27T19:43:37.744390
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_263T01_9000003990_27731cztM0_level2.evt modeM0/AS1T03_263T01_9000003990_27731cztM0_level2_quad_clean.evt
Size (bytes)550,477,440110,194,560
Size525.0 MB 105.1 MB
Events in quadrant A4,055,330739,677
Events in quadrant B4,271,031736,345
Events in quadrant C4,042,089719,442
Events in quadrant D3,863,428689,612

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163630
B0168820
C0167300
D0156720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64841101.696484%
B64843345.151141%
C64841572.421345%
D6485881.356978%

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 8614 6484 13 13 0.15% 0.20%
B 8614 6484 180 180 2.09% 2.78%
C 8614 6484 0 0 0.00% 0.00%
D 8615 6485 28 28 0.33% 0.43%

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 6 16 477880 2425.14 924 910 196.7
A 13 254 10530 48.91 924 910 196.7
A 8 192 9657 44.47 924 910 196.7
B 3 64 711121 3957.57 897 878 179.5
B 5 255 23530 126.22 897 878 179.5
B 12 111 18744 99.55 897 878 179.5
C 3 233 393578 1769.8 899 907 221.9
C 14 238 146890 657.96 899 907 221.9
C 13 61 6160 23.68 899 907 221.9
D 1 52 238484 1053.6 902 881 225.5
D 11 176 103041 453.01 902 881 225.5
D 2 250 98915 434.71 902 881 225.5

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