ASTROSAT CZTI

Data Quality Report

Orbit 20190812_A05_227T03_9000003086_level2

Creation date: 2019-08-16T15:33:46.231483
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_9000003086cztM0_level2_bc.evt modeM0/AS1A05_227T03_9000003086cztM0_level2_quad_clean.evt
Size (bytes)467,510,400222,059,520
Size445.9 MB 211.8 MB
Events in quadrant A2,960,0241,440,986
Events in quadrant B3,429,6691,443,480
Events in quadrant C3,005,2141,415,481
Events in quadrant D3,734,5571,391,264

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03060
B03060
C03060
D03060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0305970
B0320290
C0309990
D0325740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A149931210.807043%
B149931561.040486%
C149931691.127193%
D149931681.120523%

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 16243 14992 0 0 0.00% 0.00%
B 16243 14992 5 5 0.03% 0.03%
C 16243 14992 0 0 0.00% 0.00%
D 16243 14992 1 1 0.01% 0.01%

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 5 16 28105 161.52 763 747 169.4
A 0 226 5015 25.2 763 747 169.4
A 12 194 4889 24.45 763 747 169.4
B 3 64 113554 765.95 764 745 147.3
B 0 229 97797 658.96 764 745 147.3
B 7 220 79802 536.78 764 745 147.3
C 7 247 71080 394.18 740 735 178.5
C 9 54 47924 264.42 740 735 178.5
C 10 91 35464 194.6 740 735 178.5
D 9 1 206470 1143.42 757 731 179.9
D 1 20 205950 1140.53 757 731 179.9
D 1 52 197416 1093.1 757 731 179.9

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