ASTROSAT CZTI

Data Quality Report

Orbit 20160915_C01_015T01_9000000668_level2

Creation date: 2016-10-21T03:04:00.409477
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/AS1C01_015T01_9000000668cztM0_level2_bc.evt modeM0/AS1C01_015T01_9000000668cztM0_level2_quad_clean.evt
Size (bytes)3,757,213,440976,354,560
Size3.5 GB 931.1 MB
Events in quadrant A17,783,6196,017,489
Events in quadrant B18,233,6046,013,404
Events in quadrant C18,655,7845,903,648
Events in quadrant D52,658,8605,142,306

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019300
B019300
C019300
D019300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01940830
B01949310
C01952030
D03448480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01430
B01430
C01430
D01430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9468511631.228283%
B9468312221.290622%
C946859070.957913%
D946831724018.208126%

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 109064 94690 4 4 0.00% 0.00%
B 109064 94689 2 2 0.00% 0.00%
C 109064 94692 7 7 0.01% 0.01%
D 109064 94675 1599 1599 1.47% 1.69%

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 0 247 75715 70.53 4565 4457 1010.3
A 13 14 53147 48.19 4565 4457 1010.3
A 13 251 42155 37.31 4565 4457 1010.3
B 15 204 172057 189.19 4604 4461 885.9
B 0 245 102756 110.96 4604 4461 885.9
B 0 229 68574 72.37 4604 4461 885.9
C 1 16 657700 669.13 4456 4365 976.4
C 7 159 206635 207.16 4456 4365 976.4
C 14 67 125013 123.56 4456 4365 976.4
D 11 145 28652793 29767.6 4092 3919 962.4
D 8 195 2565763 2661.88 4092 3919 962.4
D 2 206 1101059 1139.98 4092 3919 962.4

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