ASTROSAT CZTI

Data Quality Report

Orbit 20171129_A04_167T04_9000001734_level2

Creation date: 2018-01-09T07:44:10.039427
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/AS1A04_167T04_9000001734cztM0_level2_bc.evt modeM0/AS1A04_167T04_9000001734cztM0_level2_quad_clean.evt
Size (bytes)900,483,840262,172,160
Size858.8 MB 250.0 MB
Events in quadrant A4,891,0701,640,846
Events in quadrant B7,271,2071,609,274
Events in quadrant C4,038,3481,695,504
Events in quadrant D9,671,9071,585,627

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04180
B04180
C04180
D04180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0459820
B0554130
C0421160
D0603740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A204696303.077825%
B2046914146.908007%
C204693041.485173%
D204697833.825297%

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 26595 20474 0 0 0.00% 0.00%
B 26594 20468 65 65 0.24% 0.32%
C 26594 20471 0 0 0.00% 0.00%
D 26594 20472 82 82 0.31% 0.40%

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 8 15 513672 2312.56 1009 988 221.7
A 1 162 193099 866.55 1009 988 221.7
A 14 235 77495 345.1 1009 988 221.7
B 4 239 1638823 8575.41 999 973 191.0
B 3 64 756062 3953.47 999 973 191.0
B 15 204 506064 2644.54 999 973 191.0
C 14 234 12342 49.34 1024 1009 229.7
C 8 128 7312 27.44 1024 1009 229.7
C 13 61 6161 22.43 1024 1009 229.7
D 8 195 2973781 12354.37 1013 972 240.6
D 1 52 1887006 7837.96 1013 972 240.6
D 9 85 232502 962.19 1013 972 240.6

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