ASTROSAT CZTI

Data Quality Report

Orbit 18947

Creation date: 2024-06-27T17:56:54.503317
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_090T01_9000002822_18947cztM0_level2.evt modeM0/AS1T03_090T01_9000002822_18947cztM0_level2_quad_clean.evt
Size (bytes)695,246,40080,133,120
Size663.0 MB 76.4 MB
Events in quadrant A3,337,909532,199
Events in quadrant B4,101,018531,759
Events in quadrant C3,374,291528,673
Events in quadrant D9,825,514402,355

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135032
B0160982
C0138102
D0334812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6172490.793908%
B61722804.536617%
C6172941.523007%
D6172254541.234608%

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 7548 6173 0 0 0.00% 0.00%
B 7548 6173 119 119 1.58% 1.93%
C 7548 6173 0 0 0.00% 0.00%
D 7548 6173 1619 1619 21.45% 26.23%

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 14 235 78617 470.39 844 829 165.4
A 13 254 7894 42.72 844 829 165.4
A 0 226 7254 38.85 844 829 165.4
B 3 112 587186 3862.01 832 815 151.8
B 7 220 134228 878.7 832 815 151.8
B 0 189 88049 574.55 832 815 151.8
C 14 238 133542 713.71 823 831 185.9
C 3 233 28408 148.31 823 831 185.9
C 13 61 5853 27.01 823 831 185.9
D 7 238 6544068 38046.04 725 706 172.0
D 12 218 265819 1541.49 725 706 172.0
D 12 233 197790 1145.93 725 706 172.0

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