ASTROSAT CZTI

Data Quality Report

Orbit 20171031_G08_028T01_9000001656_level2

Creation date: 2017-11-02T12:17:14.333248
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/AS1G08_028T01_9000001656cztM0_level2.evt modeM0/AS1G08_028T01_9000001656cztM0_level2_quad_clean.evt
Size (bytes)3,869,164,800425,338,560
Size3.6 GB 405.6 MB
Events in quadrant A34,190,3122,478,492
Events in quadrant B24,107,9092,707,983
Events in quadrant C23,839,0452,638,718
Events in quadrant D32,487,3492,446,010

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07700
B07700
C07700
D07700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01261850
B0960860
C0963940
D01220290

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A37985674917.767540%
B3798521685.707516%
C3798526256.910623%
D37985422511.122812%

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 43315 37991 4048 4048 9.35% 10.66%
B 43315 37992 831 831 1.92% 2.19%
C 43315 37992 1877 1877 4.33% 4.94%
D 43315 37990 3255 3255 7.51% 8.57%

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 14802906 17183.42 4218 4132 861.2
A 8 5 1650713 1911.91 4218 4132 861.2
A 1 162 321959 369.04 4218 4132 861.2
B 4 239 4604015 5235.19 4611 4490 878.6
B 3 64 549080 619.85 4611 4490 878.6
B 3 189 273014 305.63 4611 4490 878.6
C 9 204 6552787 6396.67 4417 4444 1023.7
C 13 61 32916 27.81 4417 4444 1023.7
C 9 54 26131 21.18 4417 4444 1023.7
D 10 253 5211766 5094.77 4233 4115 1022.2
D 7 80 4220576 4125.06 4233 4115 1022.2
D 1 52 2773857 2709.7 4233 4115 1022.2

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