ASTROSAT CZTI

Data Quality Report

Orbit 20160830_T01_132T01_9000000636_level2

Creation date: 2017-10-27T05:21:00.627857
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_132T01_9000000636cztM0_level2.evt modeM0/AS1T01_132T01_9000000636cztM0_level2_quad_clean.evt
Size (bytes)5,039,268,480806,927,040
Size4.7 GB 769.5 MB
Events in quadrant A32,833,5954,993,370
Events in quadrant B37,654,9185,064,452
Events in quadrant C31,479,2415,019,821
Events in quadrant D46,044,7724,682,209

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01436620
B01575210
C01411650
D01844120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013950
B013940
C013920
D013880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0940
C0950
D0940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A683288961.311322%
B6824712851.882867%
C683315380.787344%
D6804943796.435069%

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 97251 69006 89 89 0.09% 0.13%
B 97252 68915 188 188 0.19% 0.27%
C 97252 69010 5 5 0.01% 0.01%
D 97252 68624 3014 3014 3.10% 4.39%

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 13 251 1283440 792.28 8025 7841 1610.0
A 0 50 283579 171.26 8025 7841 1610.0
A 4 2 164318 97.19 8025 7841 1610.0
B 15 204 2334763 1533.72 8057 7865 1517.2
B 8 3 2295086 1507.57 8057 7865 1517.2
B 0 219 1025565 670.79 8057 7865 1517.2
C 1 16 845772 464.84 7825 7853 1802.6
C 13 61 63568 30.91 7825 7853 1802.6
C 14 67 35930 15.58 7825 7853 1802.6
D 2 33 5309386 2883.92 7614 7384 1838.5
D 13 235 4265237 2315.98 7614 7384 1838.5
D 2 136 2218517 1202.7 7614 7384 1838.5

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