ASTROSAT CZTI

Data Quality Report

Orbit 20180508_G08_028T01_9000002080_level2

Creation date: 2018-05-10T09:35:33.796637
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_028T01_9000002080cztM0_level2_bc.evt modeM0/AS1G08_028T01_9000002080cztM0_level2_quad_clean.evt
Size (bytes)1,333,656,000480,248,640
Size1.2 GB 458.0 MB
Events in quadrant A8,260,5503,050,100
Events in quadrant B9,511,1763,036,939
Events in quadrant C8,799,3343,002,559
Events in quadrant D11,300,6092,921,911

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0781160
B0825790
C0781950
D0875850

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07500
B07500
C07500
D07500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0850
B0850
C0850
D0850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A369134491.216374%
B369136791.839460%
C369133160.856067%
D369137652.072441%

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 45178 36915 0 0 0.00% 0.00%
B 45178 36913 49 49 0.11% 0.13%
C 45178 36915 0 0 0.00% 0.00%
D 45178 36915 109 109 0.24% 0.30%

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 63040 134.92 2113 2079 451.8
A 12 96 32305 66.9 2113 2079 451.8
A 15 222 30684 63.31 2113 2079 451.8
B 0 85 374349 958.15 2109 2067 388.5
B 10 16 361666 925.5 2109 2067 388.5
B 0 189 228921 583.86 2109 2067 388.5
C 3 233 684652 1544.09 2052 2039 442.1
C 14 234 25514 53.1 2052 2039 442.1
C 0 207 20021 40.68 2052 2039 442.1
D 10 157 1716027 3660.72 2054 2006 468.2
D 1 52 804245 1713.38 2054 2006 468.2
D 2 152 295564 626.97 2054 2006 468.2

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