ASTROSAT CZTI

Data Quality Report

Orbit 20170411_G07_080T03_9000001154_level2

Creation date: 2017-09-23T16:41:27.913577
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_080T03_9000001154cztM0_level2.evt modeM0/AS1G07_080T03_9000001154cztM0_level2_quad_clean.evt
Size (bytes)2,516,417,280541,310,400
Size2.3 GB 516.2 MB
Events in quadrant A18,845,3143,510,658
Events in quadrant B18,521,5303,548,043
Events in quadrant C17,128,9403,439,665
Events in quadrant D19,178,5703,320,540

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07640
B07640
C07640
D07640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0803260
B0788800
C0768820
D0831190

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A375367421.976769%
B375365341.422634%
C375353600.959105%
D375367301.944800%

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 45476 37539 191 191 0.42% 0.51%
B 45476 37538 11 11 0.02% 0.03%
C 45476 37540 7 7 0.02% 0.02%
D 45476 37540 344 344 0.76% 0.92%

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 0 23 964107 1065.71 4527 4434 900.5
A 15 234 205510 223.29 4527 4434 900.5
A 0 226 108850 115.95 4527 4434 900.5
B 0 214 496195 585.03 4528 4431 840.6
B 4 81 185323 215.2 4528 4431 840.6
B 0 229 98146 111.49 4528 4431 840.6
C 9 54 73492 69.36 4366 4383 996.3
C 10 9 42992 38.75 4366 4383 996.3
C 13 61 33499 29.22 4366 4383 996.3
D 6 225 735916 637.8 4345 4257 1147.2
D 2 14 662291 573.62 4345 4257 1147.2
D 1 52 400939 345.79 4345 4257 1147.2

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