ASTROSAT CZTI

Data Quality Report

Orbit 20170103_A02_005T01_9000000948_level2

Creation date: 2017-09-22T18:29:55.394963
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/AS1A02_005T01_9000000948cztM0_level2.evt modeM0/AS1A02_005T01_9000000948cztM0_level2_quad_clean.evt
Size (bytes)5,751,034,5601,129,852,800
Size5.4 GB 1.1 GB
Events in quadrant A40,370,3367,126,235
Events in quadrant B42,136,9097,209,758
Events in quadrant C41,850,4337,154,521
Events in quadrant D44,048,0746,877,169

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017480
B017480
C017480
D017480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01784310
B01827390
C01795200
D01885070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A854089821.149775%
B8540811891.392141%
C8540810141.187242%
D8540812161.423754%

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 141242 85431 12 12 0.01% 0.01%
B 141242 85431 52 52 0.04% 0.06%
C 141242 85431 39 39 0.03% 0.05%
D 141242 85431 337 337 0.24% 0.39%

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 15 223 209810 96.01 10326 10117 2079.9
A 13 251 157681 70.95 10326 10117 2079.9
A 0 226 103622 44.96 10326 10117 2079.9
B 4 48 466738 234.05 10398 10158 1950.8
B 0 214 328938 163.41 10398 10158 1950.8
B 0 219 302016 149.61 10398 10158 1950.8
C 9 247 2173506 937.01 10066 10116 2308.8
C 9 16 133416 53.4 10066 10116 2308.8
C 4 254 118749 47.05 10066 10116 2308.8
D 8 195 1382971 563.09 10071 9774 2438.7
D 13 169 1197114 486.88 10071 9774 2438.7
D 12 221 1122211 456.17 10071 9774 2438.7

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