ASTROSAT CZTI

Data Quality Report

Orbit 20161215_C02_008T01_9000000884_level2

Creation date: 2017-09-22T12:36:29.244561
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/AS1C02_008T01_9000000884cztM0_level2.evt modeM0/AS1C02_008T01_9000000884cztM0_level2_quad_clean.evt
Size (bytes)4,459,207,680753,586,560
Size4.2 GB 718.7 MB
Events in quadrant A30,908,1844,647,714
Events in quadrant B32,769,7284,694,591
Events in quadrant C29,115,4294,616,698
Events in quadrant D37,887,0214,428,106

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01358860
B01399830
C01325500
D01581310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013180
B013180
C013180
D013180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6471211911.840462%
B6471212461.925454%
C647125990.925640%
D6471218012.783101%

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 73918 64726 221 221 0.30% 0.34%
B 73918 64726 190 190 0.26% 0.29%
C 73918 64726 1 1 0.00% 0.00%
D 73918 64726 884 884 1.20% 1.37%

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 15 234 972954 629.59 7604 7439 1533.6
A 8 15 460312 295.31 7604 7439 1533.6
A 14 111 115155 70.24 7604 7439 1533.6
B 5 143 785535 530.34 7663 7481 1467.1
B 4 172 536072 360.3 7663 7481 1467.1
B 0 219 497068 333.71 7663 7481 1467.1
C 13 61 57758 29.09 7431 7463 1728.8
C 9 54 42892 20.49 7431 7463 1728.8
C 1 16 39937 18.78 7431 7463 1728.8
D 2 33 3385409 1875.95 7376 7164 1800.8
D 12 221 1851114 1023.95 7376 7164 1800.8
D 14 34 1029214 567.55 7376 7164 1800.8

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