ASTROSAT CZTI

Data Quality Report

Orbit 20170828_A03_119T02_9000001496_level2

Creation date: 2017-10-30T14:32:10.046610
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/AS1A03_119T02_9000001496cztM0_level2.evt modeM0/AS1A03_119T02_9000001496cztM0_level2_quad_clean.evt
Size (bytes)985,772,160253,238,400
Size940.1 MB 241.5 MB
Events in quadrant A6,724,3361,680,559
Events in quadrant B7,118,5201,668,233
Events in quadrant C6,639,4001,709,402
Events in quadrant D8,354,6411,576,109

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03230
C03150
D03210

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0307130
B0312190
C0305090
D0343740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15145680.448993%
B148351270.856084%
C15143350.231130%
D148011811.222890%

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 18579 15810 1 1 0.01% 0.01%
B 18579 15543 31 31 0.17% 0.20%
C 18579 15806 1 1 0.01% 0.01%
D 18579 15298 132 132 0.71% 0.86%

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 13 251 43366 120.16 1717 1676 347.0
A 15 174 35732 98.16 1717 1676 347.0
A 3 1 19419 51.14 1717 1676 347.0
B 4 239 263664 826.35 1684 1643 317.1
B 0 214 163150 509.35 1684 1643 317.1
B 0 219 50106 152.84 1684 1643 317.1
C 15 48 20389 48.25 1691 1699 387.4
C 14 234 19582 46.16 1691 1699 387.4
C 13 61 12634 28.23 1691 1699 387.4
D 8 195 555617 1439.89 1628 1581 384.8
D 1 52 457654 1185.29 1628 1581 384.8
D 1 20 457476 1184.83 1628 1581 384.8

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