ASTROSAT CZTI

Data Quality Report

Orbit 20180102_G08_006T04_9000001812_level2

Creation date: 2018-08-03T14:27:48.902110
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_006T04_9000001812cztM0_level2_bc.evt modeM0/AS1G08_006T04_9000001812cztM0_level2_quad_clean.evt
Size (bytes)1,835,792,640758,162,880
Size1.7 GB 723.0 MB
Events in quadrant A15,063,0784,963,006
Events in quadrant B15,518,4705,160,910
Events in quadrant C11,046,9125,149,559
Events in quadrant D11,271,4954,973,444

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01148010
B01092370
C0914940
D0910030

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08040
B08040
C08040
D08040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3957836129.126282%
B3957819204.851180%
C395787201.819192%
D395787701.945525%

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 47344 39569 243 243 0.51% 0.61%
B 47344 39578 42 42 0.09% 0.11%
C 47344 39580 47 47 0.10% 0.12%
D 47344 39580 89 89 0.19% 0.22%

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 14 237 3027579 6893.09 2024 1997 438.9
A 8 15 1435569 3266.06 2024 1997 438.9
A 13 251 1307074 2973.32 2024 1997 438.9
B 4 239 2931752 7500.69 2085 2042 390.6
B 4 206 2635231 6741.54 2085 2042 390.6
B 11 51 523581 1335.25 2085 2042 390.6
C 15 208 2537476 5653.62 2046 2034 448.5
C 3 233 228361 504.67 2046 2034 448.5
C 4 175 137737 302.6 2046 2034 448.5
D 1 52 1602479 3305.12 2077 2012 484.2
D 10 199 498129 1024.53 2077 2012 484.2
D 13 104 250512 513.18 2077 2012 484.2

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