ASTROSAT CZTI

Data Quality Report

Orbit 20170516_G07_087T01_9000001228_level2

Creation date: 2017-09-23T22:57:38.933956
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/AS1G07_087T01_9000001228cztM0_level2.evt modeM0/AS1G07_087T01_9000001228cztM0_level2_quad_clean.evt
Size (bytes)5,784,030,7201,058,258,880
Size5.4 GB 1009.2 MB
Events in quadrant A44,060,6106,885,805
Events in quadrant B38,802,2526,988,909
Events in quadrant C33,875,1476,749,421
Events in quadrant D53,375,3806,285,677

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01803860
B01650190
C01542490
D02079540

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015380
B015320
C015360
D015360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7499218202.426926%
B7501614871.982244%
C750285850.779709%
D7501060998.130916%

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 99490 75130 595 595 0.60% 0.79%
B 99490 75160 493 493 0.50% 0.66%
C 99490 75161 3 3 0.00% 0.00%
D 99490 75161 5296 5296 5.32% 7.05%

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 5 5529201 3088.31 8975 8800 1787.5
A 15 223 1846074 1027.84 8975 8800 1787.5
A 15 239 759175 419.79 8975 8800 1787.5
B 4 48 2413827 1434.93 9021 8802 1676.1
B 0 214 511074 299.67 9021 8802 1676.1
B 10 16 318816 184.97 9021 8802 1676.1
C 13 61 66525 29.21 8645 8677 1980.5
C 14 234 60961 26.4 8645 8677 1980.5
C 1 16 42930 17.29 8645 8677 1980.5
D 2 16 12793821 6213.43 8164 7964 2057.8
D 1 52 4027447 1953.31 8164 7964 2057.8
D 8 195 2052678 993.65 8164 7964 2057.8

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