ASTROSAT CZTI

Data Quality Report

Orbit 20161226_G06_087T01_9000000926_level2

Creation date: 2017-09-22T16:33:21.050507
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/AS1G06_087T01_9000000926cztM0_level2.evt modeM0/AS1G06_087T01_9000000926cztM0_level2_quad_clean.evt
Size (bytes)1,631,496,960284,719,680
Size1.5 GB 271.5 MB
Events in quadrant A12,272,2061,773,739
Events in quadrant B9,845,2341,854,399
Events in quadrant C9,749,6841,840,023
Events in quadrant D16,099,3311,683,442

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04380
B04380
C04380
D04380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0516720
B0441340
C0443900
D0616160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2135314706.884279%
B213534051.896689%
C213533951.849857%
D2135317948.401630%

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 22843 21356 744 744 3.26% 3.48%
B 22843 21356 19 19 0.08% 0.09%
C 22843 21356 3 3 0.01% 0.01%
D 22843 21356 1481 1481 6.48% 6.93%

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 14 111 3045032 6354.74 2341 2290 478.8
A 8 15 186691 385.12 2341 2290 478.8
A 15 234 26119 49.77 2341 2290 478.8
B 4 81 130715 277.8 2429 2368 462.0
B 0 214 117567 249.35 2429 2368 462.0
B 10 252 67071 140.05 2429 2368 462.0
C 9 16 514564 945.22 2343 2349 541.9
C 9 247 45083 78.86 2343 2349 541.9
C 13 61 18170 29.2 2343 2349 541.9
D 2 33 3610226 6479.6 2281 2208 556.8
D 8 195 1716203 3078.15 2281 2208 556.8
D 2 152 922573 1652.87 2281 2208 556.8

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