ASTROSAT CZTI

Data Quality Report

Orbit 45309

Creation date: 2024-06-27T23:12:13.771319
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/AS1A13_047T01_9000006068_45309cztM0_level2.fits modeM0/AS1A13_047T01_9000006068_45309cztM0_level2_quad_clean.evt
Size (bytes)322,050,24068,112,000
Size307.1 MB 65.0 MB
Events in quadrant A3,906,485447,324
Events in quadrant B2,479,811460,937
Events in quadrant C2,445,326445,732
Events in quadrant D2,757,842407,932

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146061
B0101032
C0102171
D0112071

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A42621724.035664%
B42611453.402957%
C4261902.112180%
D4261841.971368%

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 5047 4262 90 90 1.78% 2.11%
B 5046 4261 88 88 1.74% 2.07%
C 5046 4262 72 72 1.43% 1.69%
D 5046 4261 89 89 1.76% 2.09%

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 1732825 16870.79 483 473 102.7
A 13 248 165177 1604.0 483 473 102.7
A 10 248 78229 757.24 483 473 102.7
B 0 186 132317 1369.96 482 468 96.2
B 0 189 122338 1266.27 482 468 96.2
B 5 172 76195 786.83 482 468 96.2
C 15 208 310044 2714.66 474 476 114.0
C 14 254 224823 1967.34 474 476 114.0
C 3 233 25327 217.92 474 476 114.0
D 13 171 285414 2362.0 474 458 120.6
D 1 52 232982 1927.39 474 458 120.6
D 2 249 128838 1064.14 474 458 120.6

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