ASTROSAT CZTI

Data Quality Report

Orbit 20161111_G06_168T01_9000000786_level2

Creation date: 2017-09-19T01:10:47.152383
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_168T01_9000000786cztM0_level2.evt modeM0/AS1G06_168T01_9000000786cztM0_level2_quad_clean.evt
Size (bytes)324,676,80067,619,520
Size309.6 MB 64.5 MB
Events in quadrant A2,399,660425,902
Events in quadrant B2,503,721430,806
Events in quadrant C2,259,713422,253
Events in quadrant D2,318,745408,033

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106560
B0108960
C0104780
D0107000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5142611.186309%
B5121831.620777%
C5130450.877193%
D5138561.089918%

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 6198 5204 0 0 0.00% 0.00%
B 6198 5200 4 4 0.06% 0.08%
C 6198 5203 0 0 0.00% 0.00%
D 6198 5198 1 1 0.02% 0.02%

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 39696 316.61 596 583 123.5
A 15 174 19525 153.33 596 583 123.5
A 14 111 19305 151.55 596 583 123.5
B 0 214 68111 580.31 600 586 116.4
B 0 219 39721 336.32 600 586 116.4
B 10 245 20925 174.79 600 586 116.4
C 13 61 4508 28.99 578 583 135.4
C 14 206 2718 15.77 578 583 135.4
C 8 222 2110 11.28 578 583 135.4
D 12 221 43709 301.54 578 560 143.1
D 13 169 32162 220.85 578 560 143.1
D 8 195 22405 152.66 578 560 143.1

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