ASTROSAT CZTI

Data Quality Report

Orbit 20161112_G06_033T01_9000000792_level2

Creation date: 2021-08-25T18:11:34.205443
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1G06_033T01_9000000792cztM0_level2_bc.evt modeM0/AS1G06_033T01_9000000792cztM0_level2_quad_clean.evt
Size (bytes)3,646,886,4001,096,182,720
Size3.4 GB 1.0 GB
Events in quadrant A29,627,1906,679,819
Events in quadrant B23,961,0206,841,859
Events in quadrant C19,711,5286,768,218
Events in quadrant D30,635,9006,357,962

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02290310
B02129720
C01997570
D02351610

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019500
B019520
C019540
D019520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01630
B01630
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9547823922.505289%
B9561018971.984102%
C956507270.760063%
D9559736883.857862%

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 118432 96182 414 414 0.35% 0.43%
B 118432 96241 100 100 0.08% 0.10%
C 118432 96319 1 1 0.00% 0.00%
D 118432 96264 1740 1740 1.47% 1.81%

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 8860340 8649.5 4648 4550 1023.9
A 13 170 2398848 2338.52 4648 4550 1023.9
A 4 2 194184 185.22 4648 4550 1023.9
B 3 64 2313914 2576.21 4749 4616 896.4
B 15 204 1220024 1355.89 4749 4616 896.4
B 0 219 523221 578.55 4749 4616 896.4
C 1 16 1343921 1305.54 4625 4545 1025.9
C 9 16 119290 111.85 4625 4545 1025.9
C 8 128 56891 51.02 4625 4545 1025.9
D 11 241 8460648 7674.94 4591 4385 1101.8
D 13 169 1729014 1565.28 4591 4385 1101.8
D 2 33 862045 778.42 4591 4385 1101.8

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