ASTROSAT CZTI

Data Quality Report

Orbit 20180827_T02_088T01_9000002332_level2

Creation date: 2018-08-28T18:13:58.655043
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/AS1T02_088T01_9000002332cztM0_level2_bc.evt modeM0/AS1T02_088T01_9000002332cztM0_level2_quad_clean.evt
Size (bytes)2,539,673,280996,053,760
Size2.4 GB 949.9 MB
Events in quadrant A17,418,1006,211,343
Events in quadrant B19,094,2786,324,939
Events in quadrant C16,748,4446,079,661
Events in quadrant D18,070,3765,942,062

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720680
B01749760
C01705490
D01721410

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016700
B016700
C016700
D016700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8185412631.542991%
B8185412971.584529%
C8185414371.755565%
D8185410061.229018%

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 95080 81862 10 10 0.01% 0.01%
B 95080 81856 18 18 0.02% 0.02%
C 95080 81856 1 1 0.00% 0.00%
D 95080 81855 67 67 0.07% 0.08%

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 399737 425.5 4284 4198 929.6
A 9 143 260291 275.49 4284 4198 929.6
A 3 80 122624 127.4 4284 4198 929.6
B 4 251 639479 786.6 4340 4232 807.6
B 3 209 414363 507.85 4340 4232 807.6
B 4 216 247596 301.35 4340 4232 807.6
C 3 233 568670 582.84 4145 4122 968.6
C 7 247 97111 96.0 4145 4122 968.6
C 10 187 66941 64.85 4145 4122 968.6
D 1 52 872023 813.5 4188 4059 1066.9
D 13 104 403432 374.31 4188 4059 1066.9
D 2 234 317887 294.14 4188 4059 1066.9

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