ASTROSAT CZTI

Data Quality Report

Orbit 20220630_A11_089T02_9000005216_level2

Creation date: 2022-07-04T17:12:02.000173
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A11_089T02_9000005216cztM0_level2_bc.evt modeM0/AS1A11_089T02_9000005216cztM0_level2_quad_clean.evt
Size (bytes)5,940,106,5601,743,206,400
Size5.5 GB 1.6 GB
Events in quadrant A33,444,23911,380,014
Events in quadrant B37,577,59711,273,142
Events in quadrant C42,303,62110,923,718
Events in quadrant D57,722,70610,300,756

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05070
B05070
C05070
D05070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02817510
B03027970
C03105020
D03732850

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026640
B026640
C026640
D026640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1302238560.657334%
B13022319171.472090%
C13022335922.758345%
D13022362104.768743%

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 180931 130252 90 90 0.05% 0.07%
B 180930 130225 195 195 0.11% 0.15%
C 180931 130228 548 548 0.30% 0.42%
D 180931 130224 2118 2118 1.17% 1.63%

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 10 83 3818789 2521.06 6895 6796 1512.1
A 15 223 2174229 1433.43 6895 6796 1512.1
A 9 143 440201 286.63 6895 6796 1512.1
B 5 172 3294296 2438.8 6857 6711 1348.0
B 5 255 3072016 2273.91 6857 6711 1348.0
B 0 189 1187793 876.15 6857 6711 1348.0
C 0 10 6059823 4087.72 6536 6501 1480.9
C 15 214 5228344 3526.23 6536 6501 1480.9
C 14 254 3263626 2199.49 6536 6501 1480.9
D 12 235 10145605 6553.55 6605 6423 1547.1
D 13 249 3529776 2277.35 6605 6423 1547.1
D 12 227 2978037 1920.73 6605 6423 1547.1

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