ASTROSAT CZTI

Data Quality Report

Orbit 20201221_A10_102T10_9000004080_level2

Creation date: 2021-01-06T19:01:33.468281
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_102T10_9000004080cztM0_level2_bc.evt modeM0/AS1A10_102T10_9000004080cztM0_level2_quad_clean.evt
Size (bytes)5,600,033,2801,935,714,240
Size5.2 GB 1.8 GB
Events in quadrant A29,225,12612,617,681
Events in quadrant B34,210,09412,880,763
Events in quadrant C27,257,42912,468,278
Events in quadrant D69,922,84011,619,603

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02795490
B02964640
C02762870
D04209280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02000
B02000
C02000
D02000

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026820
B026820
C026820
D026820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13205118041.366139%
B13205130802.332432%
C13205121831.653149%
D132051111528.445222%

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 151791 132055 20 20 0.01% 0.02%
B 151791 132047 249 249 0.16% 0.19%
C 151791 132048 0 0 0.00% 0.00%
D 151791 132038 3233 3233 2.13% 2.45%

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 1449898 945.11 7130 7017 1526.7
A 13 254 213930 135.53 7130 7017 1526.7
A 8 192 108570 66.52 7130 7017 1526.7
B 10 245 4535364 3332.86 7220 7050 1358.7
B 10 246 906793 662.21 7220 7050 1358.7
B 4 200 402508 291.06 7220 7050 1358.7
C 3 233 551385 332.79 6937 6922 1636.0
C 13 61 39919 20.17 6937 6922 1636.0
C 7 247 26770 12.13 6937 6922 1636.0
D 1 52 26924680 17473.04 6763 6557 1540.6
D 8 195 9386525 6088.71 6763 6557 1540.6
D 2 250 2442025 1580.91 6763 6557 1540.6

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