ASTROSAT CZTI

Data Quality Report

Orbit 20170806_A03_052T01_9000001436_level2

Creation date: 2017-09-24T14:18:30.950719
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/AS1A03_052T01_9000001436cztM0_level2.evt modeM0/AS1A03_052T01_9000001436cztM0_level2_quad_clean.evt
Size (bytes)4,308,583,680735,949,440
Size4.0 GB 701.9 MB
Events in quadrant A30,926,2504,662,034
Events in quadrant B31,604,0354,725,511
Events in quadrant C26,649,6104,615,456
Events in quadrant D37,354,5774,272,380

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01305400
B01324560
C01207120
D01493640

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012060
B012140
C011910
D012020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01050
B01040
C01010
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5863010111.724373%
B5859011962.041304%
C588694330.735531%
D5771228704.972969%

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 75988 61809 260 260 0.34% 0.42%
B 75988 61724 326 326 0.43% 0.53%
C 75988 61955 0 0 0.00% 0.00%
D 75988 60815 2256 2256 2.97% 3.71%

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 15 2134504 1502.35 7011 6869 1416.2
A 15 239 1498546 1053.29 7011 6869 1416.2
A 15 174 254954 175.18 7011 6869 1416.2
B 4 81 2912688 2172.97 7037 6872 1337.3
B 10 247 466964 344.06 7037 6872 1337.3
B 4 239 286524 209.12 7037 6872 1337.3
C 14 67 99040 58.79 6800 6825 1568.6
C 13 61 51767 28.65 6800 6825 1568.6
C 8 222 45861 24.89 6800 6825 1568.6
D 1 20 4073833 2380.13 6520 6368 1708.9
D 2 16 2979304 1739.65 6520 6368 1708.9
D 1 52 1282626 746.82 6520 6368 1708.9

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