ASTROSAT CZTI

Data Quality Report

Orbit 43156

Creation date: 2024-06-27T22:48:43.984537
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/AS1C07_001T10_9000005856_43156cztM0_level2.fits modeM0/AS1C07_001T10_9000005856_43156cztM0_level2_quad_clean.evt
Size (bytes)313,842,24086,281,920
Size299.3 MB 82.3 MB
Events in quadrant A3,607,431584,163
Events in quadrant B2,369,289604,880
Events in quadrant C2,419,561556,024
Events in quadrant D2,837,018521,822

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380913
B01035319
C01034914
D01192230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49292034.118482%
B4924300.609261%
C492790.182667%
D4926851.725538%

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 7086 4931 143 143 2.02% 2.90%
B 7086 4927 19 19 0.27% 0.39%
C 7086 4929 8 8 0.11% 0.16%
D 7086 4928 73 73 1.03% 1.48%

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 15 237 654920 5900.24 543 532 110.9
A 10 83 571447 5147.61 543 532 110.9
A 15 222 212065 1907.27 543 532 110.9
B 5 255 125770 1209.35 540 525 103.6
B 0 229 27340 258.92 540 525 103.6
B 5 172 22198 209.27 540 525 103.6
C 15 214 221559 1841.47 521 525 120.0
C 14 254 89986 745.31 521 525 120.0
C 0 239 71300 589.64 521 525 120.0
D 1 52 324048 2507.8 531 516 129.0
D 12 16 155575 1201.91 531 516 129.0
D 13 249 127587 984.97 531 516 129.0

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