ASTROSAT CZTI

Data Quality Report

Orbit 20210715_A10_053T42_9000004544_level2

Creation date: 2021-07-17T10:16:26.901854
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/AS1A10_053T42_9000004544cztM0_level2_bc.evt modeM0/AS1A10_053T42_9000004544cztM0_level2_quad_clean.evt
Size (bytes)661,907,520190,739,520
Size631.2 MB 181.9 MB
Events in quadrant A2,972,9591,221,730
Events in quadrant B7,362,3061,208,184
Events in quadrant C3,444,3751,168,272
Events in quadrant D5,254,8871,159,285

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0303300
B0455330
C0326890
D0379340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03000
B03000
C03000
D03000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A147791320.893159%
B147793902.638879%
C147795433.674132%
D147795123.464375%

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 16194 14779 0 0 0.00% 0.00%
B 16194 14779 5 5 0.03% 0.03%
C 16194 14779 0 0 0.00% 0.00%
D 16194 14779 46 46 0.28% 0.31%

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 13 254 26000 148.56 769 753 169.9
A 0 226 4833 24.01 769 753 169.9
A 12 194 4730 23.4 769 753 169.9
B 6 159 4023737 26781.62 763 744 150.2
B 0 190 202558 1343.5 763 744 150.2
B 4 80 86524 571.05 763 744 150.2
C 3 233 347187 1998.34 725 721 173.4
C 0 10 214343 1232.13 725 721 173.4
C 14 254 46636 264.83 725 721 173.4
D 8 195 1480087 8585.06 745 720 172.3
D 12 79 666770 3865.22 745 720 172.3
D 11 176 73012 419.52 745 720 172.3

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