ASTROSAT CZTI

Data Quality Report

Orbit 20180820_T02_084T01_9000002318_level2

Creation date: 2018-08-23T12:50:47.117875
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/AS1T02_084T01_9000002318cztM0_level2_bc.evt modeM0/AS1T02_084T01_9000002318cztM0_level2_quad_clean.evt
Size (bytes)5,687,884,8002,121,462,720
Size5.3 GB 2.0 GB
Events in quadrant A34,759,50213,435,396
Events in quadrant B41,677,36313,546,280
Events in quadrant C34,584,35213,299,077
Events in quadrant D50,246,99612,922,157

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02700
B02700
C02700
D02700

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032900
B032900
C032900
D032900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03367540
B03602680
C03389550
D03854600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16139418681.157416%
B16139431611.958561%
C16139425021.550244%
D16139450923.155012%

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 187920 161395 35 35 0.02% 0.02%
B 187920 161396 52 52 0.03% 0.03%
C 187920 161396 6 6 0.00% 0.00%
D 187920 161392 1294 1294 0.69% 0.80%

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 13 248 783766 426.59 8450 8304 1817.8
A 3 80 752527 409.4 8450 8304 1817.8
A 4 2 506814 274.23 8450 8304 1817.8
B 5 65 5212473 3299.5 8516 8325 1577.3
B 0 189 655130 410.08 8516 8325 1577.3
B 4 173 571508 357.07 8516 8325 1577.3
C 3 233 2212922 1150.76 8232 8209 1915.9
C 9 54 358042 182.6 8232 8209 1915.9
C 0 207 166006 82.36 8232 8209 1915.9
D 1 52 15293107 7428.22 8283 8025 2057.7
D 10 70 703877 338.17 8283 8025 2057.7
D 12 110 650216 312.09 8283 8025 2057.7

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