ASTROSAT CZTI

Data Quality Report

Orbit 20181009_A05_069T02_9000002422_level2

Creation date: 2018-10-11T10:38:19.892983
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_069T02_9000002422cztM0_level2_bc.evt modeM0/AS1A05_069T02_9000002422cztM0_level2_quad_clean.evt
Size (bytes)2,439,020,160859,582,080
Size2.3 GB 819.8 MB
Events in quadrant A16,687,6105,412,664
Events in quadrant B18,117,1995,530,005
Events in quadrant C15,034,7415,271,184
Events in quadrant D19,274,6255,042,097

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01519020
B01589960
C01479500
D01611050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014160
B014160
C014160
D014160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6970815882.278074%
B6970815782.263729%
C6970813261.902221%
D6970818322.628106%

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 80810 69708 82 82 0.10% 0.12%
B 80810 69704 45 45 0.06% 0.06%
C 80810 69709 13 13 0.02% 0.02%
D 80810 69706 213 213 0.26% 0.31%

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 2164741 2751.59 3620 3549 785.4
A 15 223 293036 368.57 3620 3549 785.4
A 9 143 232394 291.36 3620 3549 785.4
B 10 16 800338 1150.65 3683 3586 692.4
B 15 35 795664 1143.9 3683 3586 692.4
B 0 189 453944 650.4 3683 3586 692.4
C 3 233 1241592 1514.07 3504 3484 817.7
C 10 169 137011 163.29 3504 3484 817.7
C 0 207 128103 152.4 3504 3484 817.7
D 10 70 1633464 2007.74 3532 3406 811.9
D 1 20 1357011 1667.23 3532 3406 811.9
D 12 218 1259266 1546.84 3532 3406 811.9

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