ASTROSAT CZTI

Data Quality Report

Orbit 20160113_G02_020T02_9000000268_level2

Creation date: 2017-10-27T01:52:57.103315
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/AS1G02_020T02_9000000268cztM0_level2.evt modeM0/AS1G02_020T02_9000000268cztM0_level2_quad_clean.evt
Size (bytes)2,549,839,680206,625,600
Size2.4 GB 197.1 MB
Events in quadrant A19,299,0641,314,185
Events in quadrant B19,603,1021,319,197
Events in quadrant C18,336,0311,293,580
Events in quadrant D18,929,0161,229,064

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0686520
B0695320
C0658200
D0676920

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03260
B03260
C03260
D03260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15977550.344245%
B15977280.175252%
C15977620.388058%
D159775733.586405%

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 30397 15981 384 384 1.26% 2.40%
B 30397 15982 405 405 1.33% 2.53%
C 30397 15980 398 398 1.31% 2.49%
D 30397 15979 936 936 3.08% 5.86%

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 8 14 91961 72.79 5003 5030 1194.2
A 8 15 43683 32.37 5003 5030 1194.2
A 10 2 25852 17.44 5003 5030 1194.2
B 0 234 50360 37.27 5136 5154 1212.8
B 0 220 47391 34.83 5136 5154 1212.8
B 4 200 41771 30.19 5136 5154 1212.8
C 8 229 209341 159.58 4636 4797 1281.8
C 7 159 18042 10.33 4636 4797 1281.8
C 12 4 17478 9.89 4636 4797 1281.8
D 10 84 1286233 967.52 4502 4648 1324.6
D 13 105 449281 335.67 4502 4648 1324.6
D 13 53 308672 229.52 4502 4648 1324.6

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