ASTROSAT CZTI

Data Quality Report

Orbit 20190108_T03_070T04_9000002638_level2

Creation date: 2019-01-09T14:35:20.394881
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/AS1T03_070T04_9000002638cztM0_level2_bc.evt modeM0/AS1T03_070T04_9000002638cztM0_level2_quad_clean.evt
Size (bytes)561,542,400182,802,240
Size535.5 MB 174.3 MB
Events in quadrant A4,597,6951,154,900
Events in quadrant B3,750,4601,178,823
Events in quadrant C3,303,9121,126,256
Events in quadrant D4,376,2361,091,481

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02900
B02900
C02900
D02900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0348190
B0318170
C0302140
D0342550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A142725023.517377%
B142722091.464406%
C142721290.903868%
D142721671.170123%

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 18187 14272 149 149 0.82% 1.04%
B 18187 14272 77 77 0.42% 0.54%
C 18187 14273 1 1 0.01% 0.01%
D 18187 14272 26 26 0.14% 0.18%

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 15 174 1554286 9191.76 779 765 169.0
A 15 191 41309 239.89 779 765 169.0
A 4 2 7422 39.39 779 765 169.0
B 10 245 427011 2818.67 802 784 151.2
B 0 219 99948 655.78 802 784 151.2
B 0 230 40949 265.61 802 784 151.2
C 3 233 134446 736.58 770 768 181.5
C 5 218 130316 713.82 770 768 181.5
C 9 160 23911 127.52 770 768 181.5
D 1 52 837393 4249.63 766 746 196.9
D 7 238 242790 1229.43 766 746 196.9
D 13 168 106936 539.38 766 746 196.9

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