ASTROSAT CZTI

Data Quality Report

Orbit 20161124_C02_018T02_9000000824_level2

Creation date: 2017-09-19T05:50:35.543075
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/AS1C02_018T02_9000000824cztM0_level2.evt modeM0/AS1C02_018T02_9000000824cztM0_level2_quad_clean.evt
Size (bytes)2,957,086,080501,197,760
Size2.8 GB 478.0 MB
Events in quadrant A21,801,2383,181,730
Events in quadrant B20,072,5733,237,202
Events in quadrant C16,762,5913,263,516
Events in quadrant D28,444,9882,975,450

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07480
B07480
C07480
D07480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0730
B0730
C0730
D0730

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0878050
B0838720
C0755670
D01093940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A367326381.736905%
B3673110042.733386%
C367353470.944603%
D3673226667.257977%

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 46564 36739 49 49 0.11% 0.13%
B 46564 36738 418 418 0.90% 1.14%
C 46564 36746 2 2 0.00% 0.01%
D 46564 36742 1768 1768 3.80% 4.81%

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 3583421 4043.26 4369 4270 885.2
A 15 236 966415 1086.91 4369 4270 885.2
A 13 251 334341 372.87 4369 4270 885.2
B 3 64 1590423 1882.0 4393 4294 842.8
B 0 219 683171 805.51 4393 4294 842.8
B 4 81 496252 583.73 4393 4294 842.8
C 9 54 105860 103.29 4257 4276 983.5
C 13 61 34071 30.29 4257 4276 983.5
C 8 222 17268 13.21 4257 4276 983.5
D 12 220 7616866 7500.33 4144 4020 1015.0
D 12 221 1472204 1446.48 4144 4020 1015.0
D 2 152 920834 903.26 4144 4020 1015.0

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