ASTROSAT CZTI

Data Quality Report

Orbit 20201119_A10_048T08_9000004020_level2

Creation date: 2021-01-07T10:25:04.506512
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_048T08_9000004020cztM0_level2_bc.evt modeM0/AS1A10_048T08_9000004020cztM0_level2_quad_clean.evt
Size (bytes)4,020,344,6401,418,823,360
Size3.7 GB 1.3 GB
Events in quadrant A22,454,1439,199,016
Events in quadrant B28,324,6029,213,793
Events in quadrant C25,651,2008,786,672
Events in quadrant D38,089,7528,492,711

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02219310
B02437900
C02373870
D02730440

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021620
B021620
C021620
D021620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01610
B01610
C01610
D01610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10629710751.011317%
B10629730852.902246%
C10629723072.170334%
D10629737263.505273%

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 122187 106282 16 16 0.01% 0.02%
B 122187 106280 145 145 0.12% 0.14%
C 122187 106283 24 24 0.02% 0.02%
D 122187 106282 1081 1081 0.88% 1.02%

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 13 170 178449 139.67 5710 5610 1237.5
A 13 254 167435 130.77 5710 5610 1237.5
A 13 248 90837 68.87 5710 5610 1237.5
B 10 245 4824860 4492.06 5700 5558 1072.8
B 15 32 255092 232.59 5700 5558 1072.8
B 0 190 251863 229.58 5700 5558 1072.8
C 3 233 4229823 3332.84 5411 5389 1267.5
C 15 208 439798 342.72 5411 5389 1267.5
C 2 16 71526 52.18 5411 5389 1267.5
D 1 52 14538593 11373.5 5508 5323 1277.8
D 2 250 1241272 967.23 5508 5323 1277.8
D 2 234 452825 350.21 5508 5323 1277.8

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