ASTROSAT CZTI

Data Quality Report

Orbit 24862

Creation date: 2024-06-27T19:10:54.712915
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/AS1A08_003T08_9000003638_24862cztM0_level2.evt modeM0/AS1A08_003T08_9000003638_24862cztM0_level2_quad_clean.evt
Size (bytes)940,852,800154,350,720
Size897.3 MB 147.2 MB
Events in quadrant A6,728,464972,432
Events in quadrant B5,886,661999,839
Events in quadrant C7,606,029934,923
Events in quadrant D7,448,131924,082

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0278952
B0252292
C0306732
D0301392

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02480
B02480
C02480
D02480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A121963843.148573%
B121961070.877337%
C121964253.484749%
D121962301.885864%

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 13571 12198 284 284 2.09% 2.33%
B 13571 12198 2 2 0.01% 0.02%
C 13571 12198 85 85 0.63% 0.70%
D 13571 12198 145 145 1.07% 1.19%

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 6 16 1050175 3557.23 1469 1436 294.8
A 13 254 17904 55.86 1469 1436 294.8
A 3 137 14019 42.68 1469 1436 294.8
B 0 190 47103 160.24 1469 1431 285.0
B 7 202 38065 128.53 1469 1431 285.0
B 12 111 35903 120.94 1469 1431 285.0
C 7 247 1319334 4000.71 1407 1416 329.4
C 2 16 555454 1681.85 1407 1416 329.4
C 14 238 222127 670.0 1407 1416 329.4
D 1 52 824603 2349.48 1432 1389 350.4
D 12 218 682606 1944.21 1432 1389 350.4
D 10 199 218886 620.74 1432 1389 350.4

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