ASTROSAT CZTI

Data Quality Report

Orbit 20190727_A05_165T07_9000003062_level2

Creation date: 2019-08-05T13:10:27.800917
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_165T07_9000003062cztM0_level2_bc.evt modeM0/AS1A05_165T07_9000003062cztM0_level2_quad_clean.evt
Size (bytes)6,440,333,7602,402,138,880
Size6.0 GB 2.2 GB
Events in quadrant A36,574,74615,942,832
Events in quadrant B40,958,81115,685,657
Events in quadrant C34,955,26215,072,315
Events in quadrant D71,208,59214,636,587

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033960
B033960
C033960
D033960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03506920
B03716210
C03505640
D04689870

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03080
B03080
C03080
D03080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16679517561.052789%
B16679530001.798615%
C16679524351.459876%
D16679484965.093708%

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 197396 166797 12 12 0.01% 0.01%
B 197396 166796 38 38 0.02% 0.02%
C 197396 166795 1 1 0.00% 0.00%
D 197396 166794 2182 2182 1.11% 1.31%

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 10 253 222276 105.69 9366 9224 2015.7
A 5 16 144466 67.09 9366 9224 2015.7
A 9 143 112011 50.99 9366 9224 2015.7
B 7 220 2789134 1608.26 9209 9004 1728.7
B 3 64 486040 275.96 9209 9004 1728.7
B 0 197 483173 274.3 9209 9004 1728.7
C 7 247 419986 200.23 8768 8725 2053.9
C 3 233 386850 184.1 8768 8725 2053.9
C 8 208 372134 176.93 8768 8725 2053.9
D 1 52 10947993 5314.01 8968 8685 2058.6
D 5 222 10541695 5116.64 8968 8685 2058.6
D 1 20 7459137 3619.22 8968 8685 2058.6

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