ASTROSAT CZTI

Data Quality Report

Orbit 20171221_A04_130T01_9000001792_level2

Creation date: 2017-12-27T12:25:39.956917
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/AS1A04_130T01_9000001792cztM0_level2_bc.evt modeM0/AS1A04_130T01_9000001792cztM0_level2_quad_clean.evt
Size (bytes)1,637,735,040501,344,640
Size1.5 GB 478.1 MB
Events in quadrant A8,889,3873,116,705
Events in quadrant B14,314,4383,043,109
Events in quadrant C8,745,9563,140,877
Events in quadrant D14,734,6972,949,889

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0902410
B01135360
C0885720
D01085050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08660
B08660
C08660
D08660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A427354521.057681%
B4273523825.573886%
C427351690.395460%
D4273515293.577864%

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 46691 42735 2 2 0.00% 0.00%
B 46691 42734 23 23 0.05% 0.05%
C 46691 42737 0 0 0.00% 0.00%
D 46691 42733 306 306 0.66% 0.72%

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 1 162 179182 389.98 2091 2045 454.2
A 13 251 154469 335.57 2091 2045 454.2
A 3 1 149329 324.25 2091 2045 454.2
B 4 239 4524041 11402.36 2061 1997 396.6
B 15 204 552263 1387.5 2061 1997 396.6
B 0 231 428326 1074.99 2061 1997 396.6
C 8 208 564665 1229.05 2073 2041 457.8
C 14 234 22039 43.69 2073 2041 457.8
C 0 207 19010 37.07 2073 2041 457.8
D 1 52 3962102 8247.69 2059 1982 480.1
D 8 195 1526760 3175.64 2059 1982 480.1
D 14 34 244185 504.43 2059 1982 480.1

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