ASTROSAT CZTI

Data Quality Report

Orbit 20170602_G07_057T04_9000001264_level2

Creation date: 2017-09-24T02:32:49.391507
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_057T04_9000001264cztM0_level2.evt modeM0/AS1G07_057T04_9000001264cztM0_level2_quad_clean.evt
Size (bytes)3,273,540,480553,708,800
Size3.0 GB 528.1 MB
Events in quadrant A29,996,4633,435,469
Events in quadrant B22,329,2993,518,636
Events in quadrant C20,793,3833,438,525
Events in quadrant D23,044,3383,349,824

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0690
B0690
C0690
D0690

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08940
B08980
C08940
D08960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01172550
B0940860
C0917740
D0977270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4406719134.341117%
B441499042.047611%
C441545891.333967%
D441288601.948876%

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 51093 44284 802 802 1.57% 1.81%
B 51093 44296 41 41 0.08% 0.09%
C 51093 44297 36 36 0.07% 0.08%
D 51093 44295 212 212 0.41% 0.48%

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 8554537 7896.87 5392 5282 1082.6
A 1 162 294195 266.87 5392 5282 1082.6
A 5 16 139951 124.39 5392 5282 1082.6
B 0 214 298338 287.43 5444 5318 1019.4
B 4 48 259243 249.08 5444 5318 1019.4
B 4 80 113674 106.29 5444 5318 1019.4
C 14 234 294571 240.13 5254 5270 1204.8
C 13 61 40337 29.11 5254 5270 1204.8
C 12 4 16053 8.95 5254 5270 1204.8
D 1 52 752988 547.0 5240 5113 1367.2
D 7 71 591635 428.99 5240 5113 1367.2
D 2 14 463963 335.61 5240 5113 1367.2

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