ASTROSAT CZTI

Data Quality Report

Orbit 46165

Creation date: 2024-06-27T23:19:54.187165
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/AS1T05_194T01_9000006180_46165cztM0_level2.fits modeM0/AS1T05_194T01_9000006180_46165cztM0_level2_quad_clean.evt
Size (bytes)1,220,123,520146,427,840
Size1.1 GB 139.6 MB
Events in quadrant A9,549,7411,081,583
Events in quadrant B6,926,9491,118,981
Events in quadrant C15,956,420696,445
Events in quadrant D11,928,956814,161

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02120
B02120
C02120
D02120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0345012
B0274022
C0546892
D0425504

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A104173843.686282%
B104173153.023903%
C10418416339.959685%
D10417221821.292119%

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 11892 10418 104 104 0.87% 1.00%
B 11892 10419 124 124 1.04% 1.19%
C 11893 10420 3262 3262 27.43% 31.31%
D 11892 10419 1771 1771 14.89% 17.00%

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 4569457 19262.96 1142 1118 237.2
A 7 3 416023 1749.5 1142 1118 237.2
A 0 247 86553 360.25 1142 1118 237.2
B 3 112 2081224 9306.65 1138 1101 223.5
B 5 172 139905 621.02 1138 1101 223.5
B 15 201 87558 386.82 1138 1101 223.5
C 14 254 12134599 54816.23 947 951 221.4
C 12 2 72882 324.96 947 951 221.4
C 14 61 23567 102.17 947 951 221.4
D 2 249 2871941 11246.44 1014 982 255.3
D 13 249 2202823 8625.3 1014 982 255.3
D 5 235 1138937 4457.72 1014 982 255.3

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