ASTROSAT CZTI

Data Quality Report

Orbit 20190109_T03_070T06_9000002642_level2

Creation date: 2019-01-10T10:54:04.952369
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/AS1T03_070T06_9000002642cztM0_level2_bc.evt modeM0/AS1T03_070T06_9000002642cztM0_level2_quad_clean.evt
Size (bytes)503,208,000204,079,680
Size479.9 MB 194.6 MB
Events in quadrant A3,095,3931,288,206
Events in quadrant B3,518,4661,292,802
Events in quadrant C3,748,3301,235,643
Events in quadrant D3,765,5701,247,700

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0333800
B0347330
C0355710
D0350090

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03280
B03280
C03280
D03280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A161994612.845855%
B161995493.389098%
C161996333.907649%
D161994052.500154%

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 16919 16198 0 0 0.00% 0.00%
B 16919 16199 1 1 0.01% 0.01%
C 16919 16197 7 7 0.04% 0.04%
D 16919 16199 7 7 0.04% 0.04%

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 15 174 45321 250.9 792 772 177.6
A 0 226 5253 25.24 792 772 177.6
A 12 194 5228 25.1 792 772 177.6
B 7 220 222185 1419.58 799 776 156.0
B 0 219 62724 397.18 799 776 156.0
B 0 229 38545 242.16 799 776 156.0
C 4 254 545503 2964.75 768 761 183.7
C 5 218 122927 664.89 768 761 183.7
C 3 233 58480 314.13 768 761 183.7
D 5 222 327310 1763.02 783 758 185.2
D 2 165 96782 518.42 783 758 185.2
D 10 70 85463 457.31 783 758 185.2

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