ASTROSAT CZTI

Data Quality Report

Orbit 28477

Creation date: 2024-06-27T19:52:10.822834
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_050T06_9000004092_28477cztM0_level2.evt modeM0/AS1A10_050T06_9000004092_28477cztM0_level2_quad_clean.evt
Size (bytes)695,865,600109,128,960
Size663.6 MB 104.1 MB
Events in quadrant A3,780,460728,177
Events in quadrant B6,603,586664,992
Events in quadrant C3,934,005697,717
Events in quadrant D6,223,645666,461

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163872
B0247182
C0166453
D0237422

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78621652.098703%
B7862114614.576444%
C78612613.320188%
D78627559.603154%

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 7932 7862 0 0 0.00% 0.00%
B 7932 7862 720 720 9.08% 9.16%
C 7931 7861 0 0 0.00% 0.00%
D 8257 7862 543 543 6.58% 6.91%

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 11920 55.52 975 952 197.6
A 12 96 10515 48.4 975 952 197.6
A 3 137 10183 46.72 975 952 197.6
B 10 245 2993470 16872.79 910 884 177.4
B 12 111 22985 124.61 910 884 177.4
B 10 246 22692 122.96 910 884 177.4
C 14 238 147296 655.88 938 943 223.1
C 15 208 59813 263.83 938 943 223.1
C 3 233 42041 184.18 938 943 223.1
D 1 52 1412455 6322.74 926 901 223.3
D 8 195 1222815 5473.29 926 901 223.3
D 13 104 33970 148.13 926 901 223.3

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