ASTROSAT CZTI

Data Quality Report

Orbit 20161222_T01_145T01_9000000916_level2

Creation date: 2017-09-22T14:54:32.938191
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/AS1T01_145T01_9000000916cztM0_level2.evt modeM0/AS1T01_145T01_9000000916cztM0_level2_quad_clean.evt
Size (bytes)5,714,942,4001,233,129,600
Size5.3 GB 1.1 GB
Events in quadrant A32,775,9038,446,050
Events in quadrant B34,800,8978,544,476
Events in quadrant C30,833,0118,410,822
Events in quadrant D69,886,5837,083,859

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01478150
B01522540
C01446850
D02566900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014480
B014480
C014480
D014480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7091810921.539807%
B7091813351.882456%
C709188251.163315%
D709181274417.970050%

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 81388 70935 79 79 0.10% 0.11%
B 81388 70935 150 150 0.18% 0.21%
C 81388 70935 1 1 0.00% 0.00%
D 81388 70935 9554 9554 11.74% 13.47%

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 1064550 656.64 8033 7862 1609.2
A 13 251 297550 180.02 8033 7862 1609.2
A 14 111 282976 170.96 8033 7862 1609.2
B 4 80 958491 622.75 8136 7945 1526.4
B 0 214 549786 354.98 8136 7945 1526.4
B 0 228 466170 300.2 8136 7945 1526.4
C 9 54 140272 74.01 7819 7835 1789.5
C 9 247 75448 37.78 7819 7835 1789.5
C 13 61 62495 30.54 7819 7835 1789.5
D 2 33 27326643 16071.8 7026 6807 1699.9
D 8 195 8029258 4719.47 7026 6807 1699.9
D 2 63 3177980 1865.55 7026 6807 1699.9

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