ASTROSAT CZTI

Data Quality Report

Orbit 43889

Creation date: 2024-06-27T22:56:46.786795
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_073T04_9000005912_43889cztM0_level2.fits modeM0/AS1A13_073T04_9000005912_43889cztM0_level2_quad_clean.evt
Size (bytes)251,357,76048,752,640
Size239.7 MB 46.5 MB
Events in quadrant A2,442,827333,559
Events in quadrant B2,126,068329,922
Events in quadrant C1,467,526332,579
Events in quadrant D3,027,546261,068

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A097061
B084041
C064461
D0111421

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3074912.960312%
B30741986.441119%
C3074120.390371%
D307448915.907612%

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 3974 3075 55 55 1.38% 1.79%
B 3974 3075 94 94 2.37% 3.06%
C 3974 3075 6 6 0.15% 0.20%
D 3974 3075 357 357 8.98% 11.61%

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 562107 7548.78 352 345 74.4
A 15 222 314338 4219.34 352 345 74.4
A 15 223 123559 1655.71 352 345 74.4
B 7 205 274132 3975.51 343 333 68.9
B 5 172 153582 2225.15 343 333 68.9
B 4 171 130495 1889.93 343 333 68.9
C 3 233 41266 496.46 345 346 82.4
C 14 254 30185 362.02 345 346 82.4
C 15 158 20679 246.69 345 346 82.4
D 7 80 417267 5193.69 315 305 80.3
D 2 249 337077 4194.84 315 305 80.3
D 5 235 267783 3331.72 315 305 80.3

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