ASTROSAT CZTI

Data Quality Report

Orbit 20161113_A02_104T01_9000000794_level2

Creation date: 2017-09-19T02:02:52.409413
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/AS1A02_104T01_9000000794cztM0_level2.evt modeM0/AS1A02_104T01_9000000794cztM0_level2_quad_clean.evt
Size (bytes)4,257,152,640739,497,600
Size4.0 GB 705.2 MB
Events in quadrant A38,537,7714,536,098
Events in quadrant B29,979,8494,733,074
Events in quadrant C26,935,8374,690,329
Events in quadrant D29,545,1564,442,218

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0810
C0810
D0820

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011860
B011860
C011860
D011860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01542890
B01279690
C01208480
D01289140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5825231725.445307%
B5825411151.914032%
C582564150.712373%
D5825311962.053113%

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 72963 58266 1824 1824 2.50% 3.13%
B 72963 58269 250 250 0.34% 0.43%
C 72963 58269 3 3 0.00% 0.01%
D 72963 58268 633 633 0.87% 1.09%

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 15 11929370 8470.91 6852 6685 1407.5
A 13 251 123472 82.98 6852 6685 1407.5
A 12 194 67859 43.46 6852 6685 1407.5
B 3 64 1743508 1280.55 7021 6844 1356.2
B 15 204 287502 206.95 7021 6844 1356.2
B 0 214 189092 134.38 7021 6844 1356.2
C 1 16 175398 106.5 6796 6821 1582.9
C 9 68 135454 81.26 6796 6821 1582.9
C 9 54 75779 43.56 6796 6821 1582.9
D 15 217 772733 461.75 6720 6515 1659.4
D 13 105 630718 376.17 6720 6515 1659.4
D 2 33 509084 302.87 6720 6515 1659.4

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