ASTROSAT CZTI

Data Quality Report

Orbit 20171105_A04_022T03_9000001664_level2

Creation date: 2018-01-08T17:00:26.387586
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_022T03_9000001664cztM0_level2_bc.evt modeM0/AS1A04_022T03_9000001664cztM0_level2_quad_clean.evt
Size (bytes)2,319,888,960679,305,600
Size2.2 GB 647.8 MB
Events in quadrant A14,891,9814,301,802
Events in quadrant B18,034,1594,149,125
Events in quadrant C10,074,2314,650,127
Events in quadrant D23,929,4944,119,504

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09980
B09980
C09980
D09980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01202370
B01363300
C01005740
D01516050

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0950
B0950
C0950
D0950

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4886418403.765553%
B4886440648.316961%
C488644690.959807%
D4886440938.376310%

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 58275 48867 122 122 0.21% 0.25%
B 58275 48864 348 348 0.60% 0.71%
C 58275 48867 0 0 0.00% 0.00%
D 58275 48861 945 945 1.62% 1.93%

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 5 4907296 9207.75 2483 2437 532.7
A 13 248 79178 144.06 2483 2437 532.7
A 1 162 70229 127.26 2483 2437 532.7
B 4 239 5564487 12083.45 2433 2367 460.3
B 4 81 1713869 3718.16 2433 2367 460.3
B 11 51 392028 846.52 2433 2367 460.3
C 13 61 14848 20.25 2571 2515 609.0
C 12 4 11639 14.98 2571 2515 609.0
C 14 234 10871 13.72 2571 2515 609.0
D 1 52 5807747 10048.63 2453 2360 577.7
D 10 253 2968487 5134.11 2453 2360 577.7
D 14 34 2886902 4992.89 2453 2360 577.7

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