ASTROSAT CZTI

Data Quality Report

Orbit 20180412_G08_062T01_9000002038_level2

Creation date: 2018-04-17T13:46:54.947147
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_062T01_9000002038cztM0_level2_bc.evt modeM0/AS1G08_062T01_9000002038cztM0_level2_quad_clean.evt
Size (bytes)8,065,995,8402,905,871,040
Size7.5 GB 2.7 GB
Events in quadrant A47,315,78818,454,217
Events in quadrant B50,889,70618,252,188
Events in quadrant C52,579,76919,107,208
Events in quadrant D79,529,68918,145,445

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03330
B03330
C03330
D03330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04402990
B04550800
C04528560
D05461730

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A041820
B041820
C041820
D041820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20529232761.595776%
B20529236691.787210%
C20529239981.947470%
D20529273303.570524%

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 238803 205297 232 232 0.10% 0.11%
B 238803 205293 157 157 0.07% 0.08%
C 238803 205304 294 294 0.12% 0.14%
D 238803 205298 523 523 0.22% 0.25%

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 9 143 2526836 1050.79 10919 10716 2394.5
A 0 23 1567687 650.23 10919 10716 2394.5
A 15 69 635502 260.93 10919 10716 2394.5
B 0 219 2602324 1271.44 10882 10630 2038.4
B 3 64 1151764 559.82 10882 10630 2038.4
B 4 173 1086377 527.74 10882 10630 2038.4
C 4 254 4035576 1587.05 10938 10756 2536.0
C 3 233 3110508 1222.28 10938 10756 2536.0
C 9 236 2429920 953.91 10938 10756 2536.0
D 5 222 14384729 5118.62 10801 10400 2808.2
D 1 52 7878935 2801.94 10801 10400 2808.2
D 13 168 5933755 2109.27 10801 10400 2808.2

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