ASTROSAT CZTI

Data Quality Report

Orbit 20170910_G07_004T01_9000001532_level2

Creation date: 2017-10-18T13:40:00.452004
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/AS1G07_004T01_9000001532cztM0_level2.evt modeM0/AS1G07_004T01_9000001532cztM0_level2_quad_clean.evt
Size (bytes)6,889,691,5201,181,252,160
Size6.4 GB 1.1 GB
Events in quadrant A42,731,3027,325,750
Events in quadrant B59,452,4847,381,633
Events in quadrant C41,624,9427,604,828
Events in quadrant D58,626,6397,141,585

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018780
B018840
C018800
D018760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01907270
B02388530
C01893550
D02348380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9226513091.418740%
B9226057526.234555%
C922458520.923627%
D9224026822.907632%

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 104942 92624 34 34 0.03% 0.04%
B 104942 92598 3116 3116 2.97% 3.37%
C 104942 92620 19 19 0.02% 0.02%
D 104942 92612 1597 1597 1.52% 1.72%

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 13 251 556932 252.68 10759 10531 2162.4
A 1 162 351166 157.53 10759 10531 2162.4
A 15 174 107253 44.73 10759 10531 2162.4
B 4 239 16144716 8025.42 10668 10400 2010.4
B 0 214 520368 253.66 10668 10400 2010.4
B 11 51 495755 241.42 10668 10400 2010.4
C 14 234 232235 91.23 10592 10644 2429.0
C 13 61 79054 28.16 10592 10644 2429.0
C 4 175 54658 18.12 10592 10644 2429.0
D 2 16 7246646 2927.15 10400 10115 2472.2
D 1 52 4920164 1986.1 10400 10115 2472.2
D 8 195 4633003 1869.94 10400 10115 2472.2

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