ASTROSAT CZTI

Data Quality Report

Orbit 20180605_A04_212T02_9000002140_level2

Creation date: 2018-06-06T14:14:27.392211
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_212T02_9000002140cztM0_level2_bc.evt modeM0/AS1A04_212T02_9000002140cztM0_level2_quad_clean.evt
Size (bytes)304,467,840131,212,800
Size290.4 MB 125.1 MB
Events in quadrant A2,126,149853,419
Events in quadrant B2,138,947853,341
Events in quadrant C2,121,821849,071
Events in quadrant D2,244,452825,235

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184520
B0189300
C0181650
D0192560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8547560.655201%
B85471021.193401%
C8547420.491400%
D85471521.778402%

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 9352 8547 0 0 0.00% 0.00%
B 9352 8547 7 7 0.07% 0.08%
C 9352 8547 2 2 0.02% 0.02%
D 9352 8547 6 6 0.06% 0.07%

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 400189 4233.1 417 407 94.4
A 12 189 59972 630.7 417 407 94.4
A 0 23 25955 270.52 417 407 94.4
B 0 219 97841 1197.27 417 406 81.4
B 0 189 66556 812.84 417 406 81.4
B 0 245 60874 743.02 417 406 81.4
C 3 233 483145 5141.98 409 402 93.9
C 0 207 34093 358.86 409 402 93.9
C 14 234 3794 36.13 409 402 93.9
D 12 110 235878 2234.28 411 397 105.4
D 10 199 151224 1431.07 411 397 105.4
D 2 136 62402 588.31 411 397 105.4

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