ASTROSAT CZTI

Data Quality Report

Orbit 35042

Creation date: 2022-03-22T20:46:22.997855
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_123T17_9000005018_35042cztM0_level2.evt modeM0/AS1A10_123T17_9000005018_35042cztM0_level2_quad_clean.evt
Size (bytes)488,666,88088,663,680
Size466.0 MB 84.6 MB
Events in quadrant A2,920,589585,428
Events in quadrant B3,089,568587,427
Events in quadrant C3,100,119576,237
Events in quadrant D5,297,676532,515

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123153
B0127542
C0124912
D0198072

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5775120.207792%
B5775420.727273%
C5775240.415584%
D57753245.610390%

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 9300 5777 1 1 0.01% 0.02%
B 9300 5777 31 31 0.33% 0.54%
C 9300 5777 16 16 0.17% 0.28%
D 9300 5777 283 283 3.04% 4.90%

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 77765 537.75 718 706 143.3
A 10 255 33375 227.98 718 706 143.3
A 15 169 18236 122.33 718 706 143.3
B 5 200 157165 1163.83 706 690 134.4
B 0 190 41652 304.67 706 690 134.4
B 5 172 31186 226.82 706 690 134.4
C 15 214 241516 1512.63 694 699 159.2
C 0 10 84210 524.55 694 699 159.2
C 14 67 50309 311.61 694 699 159.2
D 8 195 1012503 6080.9 681 662 166.4
D 14 52 510187 3062.11 681 662 166.4
D 13 249 337589 2024.84 681 662 166.4

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