ASTROSAT CZTI

Data Quality Report

Orbit 20161023_G06_089T01_9000000746_level2

Creation date: 2017-09-18T19:06:17.495356
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_089T01_9000000746cztM0_level2.evt modeM0/AS1G06_089T01_9000000746cztM0_level2_quad_clean.evt
Size (bytes)4,197,916,800763,637,760
Size3.9 GB 728.3 MB
Events in quadrant A32,795,2424,801,786
Events in quadrant B29,115,1914,942,535
Events in quadrant C27,115,0624,819,178
Events in quadrant D34,118,5144,509,344

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012060
B012060
C012060
D012060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01376030
B01247700
C01221400
D01434670

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5913617082.888258%
B5914010501.775448%
C591395610.948613%
D5912822363.781626%

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 67638 59166 383 383 0.57% 0.65%
B 67638 59166 34 34 0.05% 0.06%
C 67638 59165 4 4 0.01% 0.01%
D 67638 59165 1365 1365 2.02% 2.31%

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 15 236 2798462 1937.83 7089 6938 1440.5
A 15 79 1540011 1064.23 7089 6938 1440.5
A 0 31 812932 559.51 7089 6938 1440.5
B 4 81 384273 276.57 7180 7015 1364.0
B 15 204 328853 235.94 7180 7015 1364.0
B 0 219 238550 169.74 7180 7015 1364.0
C 1 16 139590 83.37 6890 6910 1591.4
C 13 61 55319 30.42 6890 6910 1591.4
C 8 222 29610 14.26 6890 6910 1591.4
D 8 230 4336316 2594.79 6832 6620 1668.6
D 7 203 1813992 1083.16 6832 6620 1668.6
D 8 195 482617 285.27 6832 6620 1668.6

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