ASTROSAT CZTI

Data Quality Report

Orbit 46087

Creation date: 2024-06-27T23:19:01.614199
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/AS1A13_077T01_9000006168_46087cztM0_level2.fits modeM0/AS1A13_077T01_9000006168_46087cztM0_level2_quad_clean.evt
Size (bytes)508,262,400119,980,800
Size484.7 MB 114.4 MB
Events in quadrant A6,250,086790,059
Events in quadrant B3,725,669814,588
Events in quadrant C3,486,829794,542
Events in quadrant D4,770,873712,930

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232160
B0161900
C0158780
D0193630

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74821331.777600%
B74821261.684042%
C7482200.267308%
D74832533.380997%

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 7482 7482 2 2 0.03% 0.03%
B 7482 7482 16 16 0.21% 0.21%
C 7482 7482 17 17 0.23% 0.23%
D 7483 7483 178 178 2.38% 2.38%

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 2908330 16109.13 857 839 180.5
A 7 3 17910 94.58 857 839 180.5
A 3 137 10232 52.04 857 839 180.5
B 0 190 147483 846.94 857 829 173.2
B 5 172 90844 519.84 857 829 173.2
B 3 112 42367 239.88 857 829 173.2
C 3 233 146137 720.24 845 849 201.7
C 12 2 35972 174.12 845 849 201.7
C 14 254 14726 68.79 845 849 201.7
D 13 249 529066 2533.98 828 803 208.5
D 1 52 487794 2336.01 828 803 208.5
D 5 235 286898 1372.35 828 803 208.5

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