ASTROSAT CZTI

Data Quality Report

Orbit 20171014_G08_075T01_9000001616_level2

Creation date: 2017-10-26T12:33:33.968689
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/AS1G08_075T01_9000001616cztM0_level2.evt modeM0/AS1G08_075T01_9000001616cztM0_level2_quad_clean.evt
Size (bytes)3,112,971,840505,134,720
Size2.9 GB 481.7 MB
Events in quadrant A22,163,8783,231,152
Events in quadrant B25,863,3213,215,552
Events in quadrant C17,935,9883,220,322
Events in quadrant D25,730,3482,998,769

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0902350
B01015970
C0790330
D01019430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07840
B07840
C07840
D07840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0890
B0890
C0890
D0890

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A383506141.601043%
B3835021065.491525%
C383503250.847458%
D3835016844.391134%

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 47260 38357 31 31 0.07% 0.08%
B 47260 38355 981 981 2.08% 2.56%
C 47260 38358 5 5 0.01% 0.01%
D 47260 38357 1209 1209 2.56% 3.15%

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 15 174 2021451 2126.96 4756 4655 948.2
A 8 15 1779736 1872.04 4756 4655 948.2
A 0 226 42765 40.19 4756 4655 948.2
B 4 239 6930515 7849.65 4693 4586 882.3
B 0 214 240503 267.38 4693 4586 882.3
B 15 204 206750 229.13 4693 4586 882.3
C 14 234 42599 36.27 4590 4627 1047.0
C 13 61 34000 28.06 4590 4627 1047.0
C 8 222 12214 7.25 4590 4627 1047.0
D 10 253 4030740 3753.59 4507 4387 1072.7
D 11 129 2265767 2108.18 4507 4387 1072.7
D 1 52 789680 732.09 4507 4387 1072.7

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