ASTROSAT CZTI

Data Quality Report

Orbit 20170923_G07_051T01_9000001550_level2

Creation date: 2017-10-18T16:01:36.181059
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_051T01_9000001550cztM0_level2.evt modeM0/AS1G07_051T01_9000001550cztM0_level2_quad_clean.evt
Size (bytes)4,072,049,280583,056,000
Size3.8 GB 556.0 MB
Events in quadrant A24,323,4703,626,223
Events in quadrant B36,500,1403,580,810
Events in quadrant C22,547,9863,658,688
Events in quadrant D36,584,2583,362,494

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010200
B010200
C010200
D010200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01057020
B01418480
C01023720
D01422280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A499806181.236495%
B4997936017.205026%
C499783150.630277%
D4997932146.430701%

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 56011 49991 99 99 0.18% 0.20%
B 56011 49991 1805 1805 3.22% 3.61%
C 56011 49993 1 1 0.00% 0.00%
D 56011 49993 2470 2470 4.41% 4.94%

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 15 239 687228 567.21 5928 5797 1201.4
A 15 174 252662 205.49 5928 5797 1201.4
A 15 223 207375 167.79 5928 5797 1201.4
B 4 239 7152885 6416.79 5843 5700 1113.8
B 0 85 5422104 4862.89 5843 5700 1113.8
B 4 81 388352 343.55 5843 5700 1113.8
C 13 61 43298 28.0 5772 5791 1339.7
C 14 234 18256 9.3 5772 5791 1339.7
C 8 222 16981 8.35 5772 5791 1339.7
D 10 157 6093510 4509.77 5608 5451 1350.0
D 1 52 4205724 3111.38 5608 5451 1350.0
D 8 195 1790836 1322.54 5608 5451 1350.0

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