ASTROSAT CZTI

Data Quality Report

Orbit 20160306_T01_028T01_9000000360_level2

Creation date: 2017-10-31T16:14:40.087845
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/AS1T01_028T01_9000000360cztM0_level2.evt modeM0/AS1T01_028T01_9000000360cztM0_level2_quad_clean.evt
Size (bytes)3,634,830,720633,553,920
Size3.4 GB 604.2 MB
Events in quadrant A24,450,2653,885,632
Events in quadrant B24,754,5003,991,355
Events in quadrant C23,923,1113,954,255
Events in quadrant D33,411,7243,758,128

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010700
B010700
C010700
D010700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100930
B01102620
C01085330
D01367820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A524707621.452258%
B524707421.414141%
C524705070.966266%
D5247024404.650276%

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 93546 52484 115 115 0.12% 0.22%
B 93546 52484 146 146 0.16% 0.28%
C 93546 52484 55 55 0.06% 0.10%
D 93546 52484 1461 1461 1.56% 2.78%

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 15 143 563037 461.16 6041 5927 1208.1
A 8 14 273668 221.63 6041 5927 1208.1
A 15 236 222911 179.61 6041 5927 1208.1
B 6 36 312318 266.88 6108 5958 1147.9
B 5 232 261663 222.75 6108 5958 1147.9
B 10 244 215943 182.92 6108 5958 1147.9
C 5 234 625032 456.25 5882 5909 1357.0
C 14 223 112641 78.65 5882 5909 1357.0
C 1 3 72148 48.81 5882 5909 1357.0
D 9 66 9541880 6999.74 5763 5626 1362.4
D 13 169 1168321 853.43 5763 5626 1362.4
D 7 67 205151 146.45 5763 5626 1362.4

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