ASTROSAT CZTI

Data Quality Report

Orbit 20170513_G07_010T02_9000001222_level2

Creation date: 2017-09-23T22:28:33.965292
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_010T02_9000001222cztM0_level2.evt modeM0/AS1G07_010T02_9000001222cztM0_level2_quad_clean.evt
Size (bytes)2,964,680,640532,290,240
Size2.8 GB 507.6 MB
Events in quadrant A21,775,7073,421,900
Events in quadrant B18,619,4933,488,348
Events in quadrant C17,891,0763,441,259
Events in quadrant D28,977,3453,201,671

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0870
B0880
C0870
D0860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0887470
B0797190
C0782170
D01115250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07620
B07640
C07740
D07590

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A374359902.644584%
B375116281.674176%
C375124381.167626%
D3715125226.788512%

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 47134 37977 368 368 0.78% 0.97%
B 47134 38031 90 90 0.19% 0.24%
C 47134 38015 25 25 0.05% 0.07%
D 47133 37795 1840 1840 3.90% 4.87%

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 2167804 2338.71 4612 4517 925.0
A 15 223 1087976 1171.32 4612 4517 925.0
A 15 239 405391 433.38 4612 4517 925.0
B 10 16 423160 482.41 4624 4519 867.8
B 4 173 137550 153.3 4624 4519 867.8
B 12 111 96801 106.34 4624 4519 867.8
C 14 234 102882 95.03 4519 4549 1034.8
C 9 68 98100 90.41 4519 4549 1034.8
C 1 16 64044 57.5 4519 4549 1034.8
D 2 16 7482713 6912.12 4361 4259 1081.9
D 2 152 2256836 2081.99 4361 4259 1081.9
D 1 52 1127766 1038.43 4361 4259 1081.9

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