ASTROSAT CZTI

Data Quality Report

Orbit 20160108_G02_016T01_9000000258_level2

Creation date: 2017-10-26T19:14:35.753074
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/AS1G02_016T01_9000000258cztM0_level2.evt modeM0/AS1G02_016T01_9000000258cztM0_level2_quad_clean.evt
Size (bytes)10,619,196,480807,710,400
Size9.9 GB 770.3 MB
Events in quadrant A81,381,7695,051,489
Events in quadrant B79,110,7295,147,944
Events in quadrant C74,243,1955,052,702
Events in quadrant D82,664,4454,827,963

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02871580
B02804470
C02660700
D02912690

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013020
B013020
C013020
D013020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A639348471.324804%
B639343000.469234%
C639342330.364438%
D6393424173.780461%

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 72581 63945 4488 4488 6.18% 7.02%
B 72581 63946 2725 2725 3.75% 4.26%
C 72581 63944 2120 2120 2.92% 3.32%
D 72581 63945 6466 6466 8.91% 10.11%

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 14 5 5043535 1052.95 19951 20111 4770.8
A 13 9 52092 6.7 19951 20111 4770.8
A 8 14 47610 5.76 19951 20111 4770.8
B 0 234 178006 32.27 20792 20947 4866.5
B 4 200 113667 19.05 20792 20947 4866.5
B 15 85 70633 10.21 20792 20947 4866.5
C 8 208 204247 35.09 18927 19623 5261.0
C 9 54 143704 23.59 18927 19623 5261.0
C 12 4 94837 14.3 18927 19623 5261.0
D 10 84 7906817 1413.76 18251 18981 5579.3
D 7 207 4846905 865.32 18251 18981 5579.3
D 13 169 541257 93.61 18251 18981 5579.3

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