ASTROSAT CZTI

Data Quality Report

Orbit 20170322_G06_154T02_9000001102_level2

Creation date: 2017-09-23T11:52:38.965218
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_154T02_9000001102cztM0_level2.evt modeM0/AS1G06_154T02_9000001102cztM0_level2_quad_clean.evt
Size (bytes)3,579,531,840716,483,520
Size3.3 GB 683.3 MB
Events in quadrant A25,331,5664,429,899
Events in quadrant B26,335,7984,576,607
Events in quadrant C25,395,2244,573,510
Events in quadrant D27,653,0364,372,903

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01129810
B01147090
C01131830
D01214320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011120
B011120
C011120
D011120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A546425751.052304%
B546457681.405435%
C546443940.721031%
D546449271.696435%

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 63206 54656 2 2 0.00% 0.00%
B 63206 54656 15 15 0.02% 0.03%
C 63206 54656 0 0 0.00% 0.00%
D 63206 54656 505 505 0.80% 0.92%

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 0 226 61221 41.54 6561 6419 1319.2
A 12 194 57180 38.48 6561 6419 1319.2
A 0 128 39154 24.81 6561 6419 1319.2
B 5 250 493325 388.96 6622 6463 1251.7
B 12 111 143614 109.57 6622 6463 1251.7
B 11 111 116357 87.8 6622 6463 1251.7
C 1 16 64131 38.42 6484 6518 1499.6
C 13 61 49262 28.5 6484 6518 1499.6
C 8 222 31269 16.5 6484 6518 1499.6
D 13 169 1240304 815.27 6393 6240 1513.7
D 1 52 965794 633.92 6393 6240 1513.7
D 2 14 812724 532.79 6393 6240 1513.7

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