ASTROSAT CZTI

Data Quality Report

Orbit 20170508_A02_132T01_9000001212_level2

Creation date: 2017-09-23T21:29:26.119867
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_132T01_9000001212cztM0_level2.evt modeM0/AS1A02_132T01_9000001212cztM0_level2_quad_clean.evt
Size (bytes)5,808,528,0001,120,743,360
Size5.4 GB 1.0 GB
Events in quadrant A40,942,3797,012,717
Events in quadrant B40,682,1577,243,253
Events in quadrant C39,439,8777,188,685
Events in quadrant D49,190,3506,755,591

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017000
B016960
C017000
D017020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01773300
B01761580
C01737270
D02037300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01430
C01430
D01430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8383313551.616309%
B8386112761.521565%
C838588070.962341%
D8379637384.460833%

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 98777 84256 163 163 0.17% 0.19%
B 98777 84246 28 28 0.03% 0.03%
C 98777 84262 42 42 0.04% 0.05%
D 98777 84231 2753 2753 2.79% 3.27%

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 1534398 748.44 10135 9925 2036.9
A 15 174 213944 100.16 10135 9925 2036.9
A 5 16 201468 94.04 10135 9925 2036.9
B 5 255 396363 199.74 10260 10025 1934.2
B 12 111 209926 103.35 10260 10025 1934.2
B 11 111 170255 82.84 10260 10025 1934.2
C 14 234 289247 120.96 10018 10073 2307.9
C 13 61 75016 28.14 10018 10073 2307.9
C 12 4 45923 15.53 10018 10073 2307.9
D 1 52 9732553 4167.47 9768 9554 2333.1
D 7 71 626272 264.34 9768 9554 2333.1
D 2 14 578720 243.96 9768 9554 2333.1

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