ASTROSAT CZTI

Data Quality Report

Orbit 20171024_G08_075T01_9000001636_level2

Creation date: 2017-10-26T11:57:09.364126
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_9000001636cztM0_level2.evt modeM0/AS1G08_075T01_9000001636cztM0_level2_quad_clean.evt
Size (bytes)3,547,958,400517,913,280
Size3.3 GB 493.9 MB
Events in quadrant A33,029,6543,148,211
Events in quadrant B24,038,4683,266,449
Events in quadrant C19,852,7573,255,972
Events in quadrant D27,591,0283,019,712

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0820
C0830
D0840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01277380
B01002290
C0896910
D01122040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08920
B08880
C08920
D08960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4355221654.971069%
B4363710402.383299%
C436342590.593574%
D4363317243.951138%

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 54998 43664 1101 1101 2.00% 2.52%
B 54998 43745 408 408 0.74% 0.93%
C 54998 43736 35 35 0.06% 0.08%
D 54998 43736 1215 1215 2.21% 2.78%

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 5980214 5948.09 5025 4918 1004.6
A 8 15 3590475 3569.23 5025 4918 1004.6
A 14 238 1747534 1734.68 5025 4918 1004.6
B 4 239 2814149 2926.21 5120 5002 960.0
B 15 204 508241 524.21 5120 5002 960.0
B 3 189 141050 141.72 5120 5002 960.0
C 4 254 147523 123.99 5013 5040 1149.2
C 1 3 93225 76.74 5013 5040 1149.2
C 13 61 37727 28.44 5013 5040 1149.2
D 1 52 2993917 2552.57 4891 4765 1171.0
D 10 253 1083955 921.57 4891 4765 1171.0
D 2 14 900738 765.11 4891 4765 1171.0

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