ASTROSAT CZTI

Data Quality Report

Orbit 39985

Creation date: 2024-06-27T22:10:56.117246
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/AS1A12_054T03_9000005516_39985cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_39985cztM0_level2_quad_clean.evt
Size (bytes)314,066,88085,999,680
Size299.5 MB 82.0 MB
Events in quadrant A2,830,824575,195
Events in quadrant B2,568,287596,920
Events in quadrant C2,583,667565,156
Events in quadrant D3,243,188507,450

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113542
B0110061
C0108401
D0132031

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5131320.623660%
B5131200.389788%
C5131500.974469%
D51311943.780939%

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 7104 5132 22 22 0.31% 0.43%
B 7104 5132 7 7 0.10% 0.14%
C 7104 5132 52 52 0.73% 1.01%
D 7104 5132 177 177 2.49% 3.45%

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 463474 3992.42 571 560 115.9
A 13 248 86754 743.38 571 560 115.9
A 2 79 46250 394.05 571 560 115.9
B 4 171 191879 1738.96 568 554 110.0
B 5 255 80619 727.71 568 554 110.0
B 5 32 17989 158.47 568 554 110.0
C 15 214 217510 1657.59 558 561 130.9
C 0 10 95384 724.49 558 561 130.9
C 10 20 54426 411.55 558 561 130.9
D 12 227 489336 3612.32 551 534 135.3
D 2 250 390653 2883.04 551 534 135.3
D 13 249 82061 602.49 551 534 135.3

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