ASTROSAT CZTI

Data Quality Report

Orbit 20190428_A05_227T03_9000002862_level2

Creation date: 2019-04-29T10:20:51.011039
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/AS1A05_227T03_9000002862cztM0_level2_bc.evt modeM0/AS1A05_227T03_9000002862cztM0_level2_quad_clean.evt
Size (bytes)228,723,84075,548,160
Size218.1 MB 72.0 MB
Events in quadrant A989,208512,094
Events in quadrant B1,109,915516,803
Events in quadrant C963,179486,882
Events in quadrant D3,534,878439,806

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A097670
B0102140
C098750
D0203350

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4732370.781910%
B4732711.500423%
C4732611.289096%
D473285818.131868%

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 5747 4731 0 0 0.00% 0.00%
B 5747 4732 1 1 0.02% 0.02%
C 5747 4731 0 0 0.00% 0.00%
D 5747 4731 30 30 0.52% 0.63%

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 13 254 4568 75.85 253 248 57.0
A 4 2 3609 59.01 253 248 57.0
A 5 16 3520 57.45 253 248 57.0
B 6 36 37037 718.91 256 250 51.2
B 4 216 31811 616.78 256 250 51.2
B 0 190 15732 302.56 256 250 51.2
C 3 233 26413 442.43 242 241 59.2
C 13 61 1489 21.1 242 241 59.2
C 9 160 1474 20.84 242 241 59.2
D 10 66 1521474 27607.4 227 219 55.1
D 7 238 644353 11689.6 227 219 55.1
D 1 52 286195 5189.83 227 219 55.1

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