ASTROSAT CZTI

Data Quality Report

Orbit 27318

Creation date: 2024-06-27T19:38:50.111001
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_255T01_9000003922_27318cztM0_level2.evt modeM0/AS1T03_255T01_9000003922_27318cztM0_level2_quad_clean.evt
Size (bytes)539,242,560105,209,280
Size514.3 MB 100.3 MB
Events in quadrant A3,580,253691,708
Events in quadrant B4,184,415688,794
Events in quadrant C3,622,789655,008
Events in quadrant D4,445,539639,719

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153260
B0170620
C0153950
D0181700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7349580.789223%
B73501932.625850%
C73501071.455782%
D73501021.387755%

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 8469 7351 0 0 0.00% 0.00%
B 8470 7352 63 63 0.74% 0.86%
C 8470 7352 2 2 0.02% 0.03%
D 8470 7352 66 66 0.78% 0.90%

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 13 254 13988 69.83 924 902 187.4
A 3 137 8481 40.44 924 902 187.4
A 0 226 8073 38.26 924 902 187.4
B 5 172 199541 1135.83 911 889 174.9
B 3 64 155195 882.27 911 889 174.9
B 7 205 147714 839.5 911 889 174.9
C 14 238 136887 653.92 873 876 208.0
C 8 208 28694 133.74 873 876 208.0
C 0 207 23483 108.69 873 876 208.0
D 1 52 523760 2223.51 874 860 235.2
D 2 250 326650 1385.34 874 860 235.2
D 10 103 71934 302.23 874 860 235.2

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