ASTROSAT CZTI

Data Quality Report

Orbit 20180215_A04_116T01_9000001896_level2

Creation date: 2018-07-20T09:06:54.619231
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_116T01_9000001896cztM0_level2_bc.evt modeM0/AS1A04_116T01_9000001896cztM0_level2_quad_clean.evt
Size (bytes)6,831,858,2402,773,560,960
Size6.4 GB 2.6 GB
Events in quadrant A40,399,99918,838,422
Events in quadrant B60,118,36817,089,505
Events in quadrant C34,320,78118,875,378
Events in quadrant D60,677,85217,751,495

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A034060
B034060
C034060
D034060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02770
B02770
C02770
D02770

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03694540
B04932140
C03446960
D04285870

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16714728051.678164%
B1671472526715.116634%
C16714713570.811860%
D16714768114.074856%

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 195044 167154 45 45 0.02% 0.03%
B 195044 166467 694 694 0.36% 0.42%
C 195044 167152 0 0 0.00% 0.00%
D 195044 167152 1588 1588 0.81% 0.95%

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 12 189 1477261 762.0 8857 8716 1927.2
A 1 162 947049 486.88 8857 8716 1927.2
A 15 174 929390 477.72 8857 8716 1927.2
B 4 239 18969030 12623.89 8087 7901 1502.0
B 0 85 4450710 2957.92 8087 7901 1502.0
B 3 64 2574744 1708.95 8087 7901 1502.0
C 4 112 234118 118.71 8669 8592 1899.7
C 14 234 55678 24.79 8669 8592 1899.7
C 13 61 52710 23.22 8669 8592 1899.7
D 1 52 19011542 9570.87 8603 8335 1985.5
D 8 195 2525426 1267.72 8603 8335 1985.5
D 13 122 1428348 715.18 8603 8335 1985.5

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