ASTROSAT CZTI

Data Quality Report

Orbit 20190124_A05_108T02_9000002676_level2

Creation date: 2019-01-29T10:44:38.432058
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/AS1A05_108T02_9000002676cztM0_level2_bc.evt modeM0/AS1A05_108T02_9000002676cztM0_level2_quad_clean.evt
Size (bytes)4,156,447,6801,448,426,880
Size3.9 GB 1.3 GB
Events in quadrant A31,367,0499,066,462
Events in quadrant B24,324,6909,318,715
Events in quadrant C24,678,9208,939,896
Events in quadrant D37,740,3958,730,914

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023260
B023260
C023260
D023260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02654860
B02402290
C02411630
D02838100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11404027992.454402%
B11404013681.199579%
C11404016891.481059%
D11404037313.271659%

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 129855 114042 270 270 0.21% 0.24%
B 129855 114041 25 25 0.02% 0.02%
C 129855 114039 32 32 0.02% 0.03%
D 129855 114039 814 814 0.63% 0.71%

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 14 237 7192306 5581.11 5906 5794 1287.6
A 15 174 1283335 992.15 5906 5794 1287.6
A 4 2 211903 160.07 5906 5794 1287.6
B 5 172 218824 189.19 5985 5831 1125.8
B 7 220 203310 175.41 5985 5831 1125.8
B 0 197 144653 123.31 5985 5831 1125.8
C 3 233 1450146 1075.25 5741 5705 1343.4
C 0 207 940438 695.82 5741 5705 1343.4
C 9 160 83160 57.66 5741 5705 1343.4
D 5 222 7626699 5263.83 5760 5601 1447.8
D 11 176 3371539 2324.83 5760 5601 1447.8
D 7 238 2981316 2055.3 5760 5601 1447.8

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