ASTROSAT CZTI

Data Quality Report

Orbit 20180517_G08_014T01_9000002104_level2

Creation date: 2018-05-25T18:14:11.270408
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_014T01_9000002104cztM0_level2_bc.evt modeM0/AS1G08_014T01_9000002104cztM0_level2_quad_clean.evt
Size (bytes)8,257,835,5202,478,697,920
Size7.7 GB 2.3 GB
Events in quadrant A46,057,82716,032,957
Events in quadrant B52,963,69315,973,496
Events in quadrant C48,836,96615,175,078
Events in quadrant D89,026,90314,593,118

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04161680
B04498030
C04156470
D05751140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039520
B039520
C039520
D039520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03150
B03150
C03150
D03150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19422124391.255786%
B19422159833.080511%
C19422116740.861905%
D194220126236.499331%

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 227384 194232 17 17 0.01% 0.01%
B 227384 194227 222 222 0.10% 0.11%
C 227384 194230 7 7 0.00% 0.00%
D 227384 194224 1997 1997 0.88% 1.03%

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 12 189 2323528 1029.99 10439 10256 2245.9
A 8 15 1951816 864.48 10439 10256 2245.9
A 0 23 945346 416.35 10439 10256 2245.9
B 0 229 4795793 2491.45 10323 10072 1920.9
B 10 245 3073062 1594.6 10323 10072 1920.9
B 0 182 2400238 1244.32 10323 10072 1920.9
C 3 233 9707687 4427.41 9958 9824 2190.4
C 6 96 81459 32.7 9958 9824 2190.4
C 14 234 64058 24.76 9958 9824 2190.4
D 5 222 15347772 6750.86 9897 9633 2272.0
D 13 122 13260938 5832.37 9897 9633 2272.0
D 8 195 8500952 3737.33 9897 9633 2272.0

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