ASTROSAT CZTI

Data Quality Report

Orbit 20171012_A04_113T01_9000001604_level2

Creation date: 2017-10-17T10:34:20.680280
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/AS1A04_113T01_9000001604cztM0_level2.evt modeM0/AS1A04_113T01_9000001604cztM0_level2_quad_clean.evt
Size (bytes)2,521,388,160305,003,520
Size2.3 GB 290.9 MB
Events in quadrant A25,562,8181,750,415
Events in quadrant B17,230,3091,901,233
Events in quadrant C12,408,4571,957,131
Events in quadrant D19,332,5181,762,401

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0210
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05600
B05640
C05840
D05560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0942470
B0693260
C0565520
D0758690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A26503368713.911633%
B2721916155.933355%
C275431600.580910%
D2687611524.286352%

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 35312 28072 2319 2319 6.57% 8.26%
B 35309 28925 785 785 2.22% 2.71%
C 35312 29191 0 0 0.00% 0.00%
D 35313 28534 880 880 2.49% 3.08%

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 14 238 10034304 16478.15 2994 2931 608.8
A 15 174 2027067 3324.97 2994 2931 608.8
A 8 5 1718753 2818.51 2994 2931 608.8
B 4 239 4467372 7412.97 3179 3095 602.2
B 0 214 94007 150.96 3179 3095 602.2
B 0 187 73840 117.47 3179 3095 602.2
C 8 128 23704 28.01 3170 3180 732.8
C 13 61 23592 27.85 3170 3180 732.8
C 8 112 14161 14.98 3170 3180 732.8
D 1 52 3575122 4924.74 3030 2944 725.4
D 11 129 1713254 2357.9 3030 2944 725.4
D 14 34 711249 976.5 3030 2944 725.4

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