ASTROSAT CZTI

Data Quality Report

Orbit 20180501_G08_064T01_9000002070_level2

Creation date: 2018-05-04T17:45:38.639758
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/AS1G08_064T01_9000002070cztM0_level2_bc.evt modeM0/AS1G08_064T01_9000002070cztM0_level2_quad_clean.evt
Size (bytes)3,172,950,7201,219,757,760
Size3.0 GB 1.1 GB
Events in quadrant A19,025,0227,819,936
Events in quadrant B21,431,5967,838,707
Events in quadrant C19,656,3607,791,242
Events in quadrant D29,927,2557,406,636

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01862170
B01960820
C01852760
D02218420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018080
B018080
C018080
D018080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8886210331.162477%
B8886218942.131395%
C888628090.910400%
D8886228873.248858%

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 103898 88868 4 4 0.00% 0.00%
B 103898 88845 111 111 0.11% 0.12%
C 103898 88866 5 5 0.00% 0.01%
D 103898 88867 412 412 0.40% 0.46%

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 8 15 448562 439.87 4641 4550 1009.4
A 12 189 445250 436.59 4641 4550 1009.4
A 1 162 127418 121.72 4641 4550 1009.4
B 10 16 1761666 2025.82 4634 4512 867.4
B 0 189 361731 411.84 4634 4512 867.4
B 3 64 270252 306.37 4634 4512 867.4
C 3 233 1515895 1492.99 4575 4517 1012.3
C 0 207 164463 158.0 4575 4517 1012.3
C 14 234 48748 43.69 4575 4517 1012.3
D 1 52 5130171 4658.38 4515 4372 1100.3
D 8 195 2419417 2194.82 4515 4372 1100.3
D 13 189 1498363 1357.75 4515 4372 1100.3

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