ASTROSAT CZTI

Data Quality Report

Orbit 20151130_P01_998T01_9000000188_level2

Creation date: 2016-09-06T17:57:03.655521
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/AS1P01_998T01_9000000188cztM0_level2_bc.evt modeM0/AS1P01_998T01_9000000188cztM0_level2_quad_clean.evt
Size (bytes)11,938,642,5604,684,743,360
Size11.1 GB 4.4 GB
Events in quadrant A59,340,84031,149,213
Events in quadrant B67,137,96330,984,471
Events in quadrant C80,936,38630,271,509
Events in quadrant D133,003,49828,212,708

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013274650
B013906890
C013604730
D015199570

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04400
B04400
C04400
D04400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A063280
B063280
C063260
D063280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A31078016280.523843%
B31078018630.599459%
C3107809400.302465%
D310781252858.135954%

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 360340 310790 71 71 0.02% 0.02%
B 360340 310784 123 123 0.03% 0.04%
C 360340 310787 20 20 0.01% 0.01%
D 360340 310659 4704 4704 1.31% 1.51%

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 14 170 4375980 1510.55 13781 13469 2888.0
A 15 233 392151 131.12 13781 13469 2888.0
A 12 189 353683 117.8 13781 13469 2888.0
B 0 220 1992927 794.47 13983 13569 2491.4
B 5 249 1962146 782.12 13983 13569 2491.4
B 8 234 1308120 519.6 13983 13569 2491.4
C 15 241 13661213 4895.48 13433 13162 2787.9
C 10 34 9943028 3561.79 13433 13162 2787.9
C 3 79 1111262 393.88 13433 13162 2787.9
D 12 188 52447820 18708.4 12884 12503 2802.8
D 1 4 17766497 6334.45 12884 12503 2802.8
D 11 131 3937353 1400.35 12884 12503 2802.8

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
Veto Counter