ASTROSAT CZTI

Data Quality Report

Orbit 18648

Creation date: 2024-06-27T17:52:56.785356
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/AS1A06_003T01_9000002786_18648cztM0_level2.evt modeM0/AS1A06_003T01_9000002786_18648cztM0_level2_quad_clean.evt
Size (bytes)573,053,760113,376,960
Size546.5 MB 108.1 MB
Events in quadrant A3,812,751727,462
Events in quadrant B3,870,629739,624
Events in quadrant C3,882,875726,490
Events in quadrant D5,254,274692,167

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166232
B0168482
C0168322
D0211262

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78811381.751047%
B78812182.766146%
C78812282.893034%
D78823914.960670%

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 8311 7884 0 0 0.00% 0.00%
B 8311 7884 12 12 0.14% 0.15%
C 8311 7884 2 2 0.02% 0.03%
D 8312 7885 233 233 2.80% 2.95%

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 0 13 98918 502.31 955 934 195.1
A 15 191 13710 65.5 955 934 195.1
A 6 16 12954 61.62 955 934 195.1
B 0 230 76192 406.09 955 929 185.3
B 12 111 23300 120.7 955 929 185.3
B 0 244 22645 117.17 955 929 185.3
C 14 238 142760 648.73 930 937 218.6
C 9 221 98039 444.17 930 937 218.6
C 5 112 13990 59.71 930 937 218.6
D 1 52 1678004 7437.04 923 896 225.5
D 7 238 56748 247.67 923 896 225.5
D 2 234 29395 126.38 923 896 225.5

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