ASTROSAT CZTI

Data Quality Report

Orbit 12727

Creation date: 2024-06-27T16:31:40.889864
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_021T01_9000001880_12727cztM0_level2.evt modeM0/AS1G08_021T01_9000001880_12727cztM0_level2_quad_clean.evt
Size (bytes)512,323,20080,824,320
Size488.6 MB 77.1 MB
Events in quadrant A4,379,719511,280
Events in quadrant B3,345,168518,757
Events in quadrant C2,523,366521,772
Events in quadrant D4,872,945488,784

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169643
B0139142
C0117452
D0186182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58113656.281191%
B58113245.575632%
C5811150.258131%
D58112935.042161%

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 6137 5813 283 283 4.61% 4.87%
B 6137 5813 139 139 2.26% 2.39%
C 6137 5813 0 0 0.00% 0.00%
D 6137 5813 213 213 3.47% 3.66%

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 15 239 1810131 13848.3 647 633 130.7
A 12 189 32121 240.98 647 633 130.7
A 15 222 26181 195.52 647 633 130.7
B 4 239 709691 5758.46 647 630 123.1
B 3 64 30091 239.26 647 630 123.1
B 0 205 24481 193.7 647 630 123.1
C 13 61 4752 27.44 645 647 149.6
C 14 234 3700 20.41 645 647 149.6
C 15 208 3674 20.24 645 647 149.6
D 1 52 2083213 14109.7 625 609 147.6
D 10 199 134491 907.05 625 609 147.6
D 8 195 68927 462.86 625 609 147.6

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