ASTROSAT CZTI

Data Quality Report

Orbit 20210114_A10_073T08_9000004112_level2

Creation date: 2021-01-18T10:08:32.702058
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/AS1A10_073T08_9000004112cztM0_level2_bc.evt modeM0/AS1A10_073T08_9000004112cztM0_level2_quad_clean.evt
Size (bytes)4,238,323,2001,304,020,800
Size3.9 GB 1.2 GB
Events in quadrant A24,051,6518,555,724
Events in quadrant B30,689,8238,526,679
Events in quadrant C20,718,6708,154,355
Events in quadrant D46,360,4907,675,012

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02132000
B02374880
C02071610
D02936830

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019540
B019540
C019540
D019540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01350
B01350
C01350
D01350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9607421862.275329%
B9607345224.706838%
C9607437233.875138%
D9607466116.881154%

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 109410 96079 97 97 0.09% 0.10%
B 109410 96075 219 219 0.20% 0.23%
C 109410 96064 86 86 0.08% 0.09%
D 109410 96079 1280 1280 1.17% 1.33%

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 2923275 2495.38 5402 5299 1169.4
A 13 254 173153 143.54 5402 5299 1169.4
A 12 16 111432 90.76 5402 5299 1169.4
B 10 245 9410864 9369.03 5370 5251 1003.9
B 5 172 130458 124.72 5370 5251 1003.9
B 3 209 116249 110.57 5370 5251 1003.9
C 2 16 515806 422.43 5107 5087 1209.0
C 14 254 329056 267.96 5107 5087 1209.0
C 14 128 119214 94.4 5107 5087 1209.0
D 1 52 17164932 14560.25 5113 4941 1178.6
D 8 195 7063274 5988.99 5113 4941 1178.6
D 2 250 617568 519.81 5113 4941 1178.6

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