ASTROSAT CZTI

Data Quality Report

Orbit 20160721_G05_230T04_9000000550_level2

Creation date: 2016-09-06T17:48:15.148353
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/AS1G05_230T04_9000000550cztM0_level2_bc.evt modeM0/AS1G05_230T04_9000000550cztM0_level2_quad_clean.evt
Size (bytes)5,619,012,4801,456,611,840
Size5.2 GB 1.4 GB
Events in quadrant A25,914,1569,364,811
Events in quadrant B34,777,9149,250,321
Events in quadrant C23,611,1519,473,908
Events in quadrant D78,507,3238,598,629

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02396440
B02627640
C02295330
D03929090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022000
B022000
C022000
D022000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01860
B01860
C01860
D01860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10837025632.365046%
B10837143534.016757%
C1083719600.885846%
D1083711526914.089563%

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 126552 108373 96 96 0.08% 0.09%
B 126552 108372 1471 1471 1.16% 1.36%
C 126552 108373 7 7 0.01% 0.01%
D 126552 108374 8922 8922 7.05% 8.23%

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 0 13 4420404 3816.24 5249 5133 1157.0
A 13 251 371920 317.02 5249 5133 1157.0
A 0 50 312368 265.55 5249 5133 1157.0
B 14 167 10676619 10635.8 5247 5096 1003.4
B 10 16 2524535 2511.0 5247 5096 1003.4
B 15 204 312743 306.62 5247 5096 1003.4
C 14 48 1878587 1606.43 5205 5116 1166.2
C 9 16 766692 653.02 5205 5116 1166.2
C 9 247 444705 376.93 5205 5116 1166.2
D 13 114 52511756 44392.07 5051 4867 1182.8
D 13 53 1455617 1226.54 5051 4867 1182.8
D 2 136 811420 681.9 5051 4867 1182.8

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