ASTROSAT CZTI

Data Quality Report

Orbit 20170102_G06_168T13_9000000942_level2

Creation date: 2017-09-22T18:12:29.965500
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_168T13_9000000942cztM0_level2.evt modeM0/AS1G06_168T13_9000000942cztM0_level2_quad_clean.evt
Size (bytes)736,228,800146,059,200
Size702.1 MB 139.3 MB
Events in quadrant A5,400,358921,653
Events in quadrant B5,177,165937,547
Events in quadrant C5,303,376924,283
Events in quadrant D5,691,609900,481

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232090
B0226360
C0231510
D0245600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A106831081.010952%
B106831371.282411%
C106831531.432182%
D106832732.555462%

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 12288 10685 4 4 0.03% 0.04%
B 12288 10685 4 4 0.03% 0.04%
C 12288 10685 64 64 0.52% 0.60%
D 12288 10685 171 171 1.39% 1.60%

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 389038 1492.37 1265 1236 259.9
A 15 239 105309 400.5 1265 1236 259.9
A 13 248 30845 113.94 1265 1236 259.9
B 4 48 49592 197.11 1277 1248 245.3
B 0 219 41287 163.25 1277 1248 245.3
B 3 220 32664 128.09 1277 1248 245.3
C 9 68 364720 1271.89 1230 1239 285.8
C 10 22 53782 183.86 1230 1239 285.8
C 9 247 29328 98.29 1230 1239 285.8
D 2 33 683814 2268.83 1226 1187 300.9
D 8 195 138835 457.5 1226 1187 300.9
D 14 34 85383 279.84 1226 1187 300.9

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