ASTROSAT CZTI

Data Quality Report

Orbit 20200123_A07_138T06_9000003456_level2

Creation date: 2020-01-24T10:33:03.244236
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A07_138T06_9000003456cztM0_level2_bc.evt modeM0/AS1A07_138T06_9000003456cztM0_level2_quad_clean.evt
Size (bytes)842,250,240264,208,320
Size803.2 MB 252.0 MB
Events in quadrant A3,956,2211,711,382
Events in quadrant B4,247,1771,727,425
Events in quadrant C11,030,0531,620,863
Events in quadrant D4,993,7251,651,957

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0388690
B0399660
C0645620
D0419550

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03860
C03860
D03860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A187162991.597564%
B187163942.105151%
C1871615328.185510%
D187163832.046377%

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 22071 18714 0 0 0.00% 0.00%
B 22071 18713 4 4 0.02% 0.02%
C 22071 18712 82 82 0.37% 0.44%
D 22071 18713 24 24 0.11% 0.13%

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 29403 126.81 1024 1004 224.0
A 12 194 6659 25.25 1024 1004 224.0
A 0 226 6614 25.05 1024 1004 224.0
B 0 189 86374 440.28 1024 1003 193.9
B 0 190 75918 386.35 1024 1003 193.9
B 0 229 42032 211.6 1024 1003 193.9
C 0 239 7177643 31482.75 966 961 228.0
C 7 247 81105 351.58 966 961 228.0
C 2 16 18091 75.15 966 961 228.0
D 1 52 436155 1857.4 1013 981 234.3
D 2 152 183999 781.15 1013 981 234.3
D 7 38 120749 511.19 1013 981 234.3

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