ASTROSAT CZTI

Data Quality Report

Orbit 11345

Creation date: 2024-06-27T16:11:35.983369
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/AS1G08_062T01_9000001660_11345cztM0_level2.evt modeM0/AS1G08_062T01_9000001660_11345cztM0_level2_quad_clean.evt
Size (bytes)576,080,64084,882,240
Size549.4 MB 81.0 MB
Events in quadrant A4,358,401552,347
Events in quadrant B4,365,726535,283
Events in quadrant C2,796,192551,256
Events in quadrant D5,513,863505,738

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170682
B0170571
C0124841
D0205761

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60881652.710250%
B60884096.718134%
C6088320.525624%
D60885709.362681%

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 7263 6089 76 76 1.05% 1.25%
B 7263 6089 265 265 3.65% 4.35%
C 7263 6089 1 1 0.01% 0.02%
D 7263 6089 455 455 6.26% 7.47%

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 13 251 1412422 9733.12 726 713 145.0
A 8 5 81493 556.94 726 713 145.0
A 15 174 22636 151.15 726 713 145.0
B 4 239 946787 7073.48 712 696 133.8
B 3 64 503457 3758.91 712 696 133.8
B 15 204 43609 320.84 712 696 133.8
C 13 250 18010 105.6 711 716 163.8
C 13 61 5107 26.81 711 716 163.8
C 12 4 4745 24.6 711 716 163.8
D 1 52 1345954 8247.09 683 664 163.1
D 10 253 500857 3066.35 683 664 163.1
D 13 152 346838 2122.16 683 664 163.1

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