ASTROSAT CZTI

Data Quality Report

Orbit 20160102_P01_999T99_9000000238_level2

Creation date: 2016-09-06T17:55:54.612490
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/AS1P01_999T99_9000000238cztM0_level2_bc.evt modeM0/AS1P01_999T99_9000000238cztM0_level2_quad_clean.evt
Size (bytes)3,502,241,2801,228,616,640
Size3.3 GB 1.1 GB
Events in quadrant A42,087,9577,727,602
Events in quadrant B20,206,1038,091,059
Events in quadrant C17,793,5997,977,118
Events in quadrant D20,362,4907,760,786

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01190
B01190
C01190
D01190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016800
B016800
C016800
D016800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04458610
B03782280
C03453310
D03399010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8251166548.064379%
B8251110041.216807%
C825112850.345408%
D8251017212.085808%

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 94426 82503 607 607 0.64% 0.74%
B 94426 82510 314 314 0.33% 0.38%
C 94426 82502 19 19 0.02% 0.02%
D 94426 82423 523 523 0.55% 0.63%

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 15 127 28102141 38421.34 3448 3372 731.3
A 13 17 209741 282.18 3448 3372 731.3
A 4 32 85410 112.18 3448 3372 731.3
B 8 4 2078732 3138.97 3636 3514 661.1
B 5 249 1362169 2055.1 3636 3514 661.1
B 12 52 748706 1127.17 3636 3514 661.1
C 15 241 3108834 4201.34 3517 3449 739.1
C 3 79 315390 422.03 3517 3449 739.1
C 3 111 161220 213.45 3517 3449 739.1
D 5 190 1775948 2338.79 3481 3371 757.9
D 12 79 1754457 2310.43 3481 3371 757.9
D 9 53 730345 959.19 3481 3371 757.9

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