ASTROSAT CZTI

Data Quality Report

Orbit 43444

Creation date: 2024-06-27T22:52:03.364509
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_018T01_9000005874_43444cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43444cztM0_level2_quad_clean.evt
Size (bytes)510,998,40079,081,920
Size487.3 MB 75.4 MB
Events in quadrant A7,358,130363,297
Events in quadrant B3,930,457582,572
Events in quadrant C2,438,347593,860
Events in quadrant D4,794,465499,374

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252362
B0150633
C0103802
D0178262

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0320
C0320
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5070203940.216963%
B50693807.496548%
C506990.177550%
D50694969.784967%

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 7072 5070 1916 1916 27.09% 37.79%
B 7072 5070 324 324 4.58% 6.39%
C 7072 5070 2 2 0.03% 0.04%
D 7072 5070 510 510 7.21% 10.06%

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 15 222 5011913 57094.66 426 417 87.8
A 10 83 441962 5030.4 426 417 87.8
A 15 237 237468 2700.65 426 417 87.8
B 0 190 1126386 10795.98 547 531 104.3
B 4 36 314269 3008.48 547 531 104.3
B 0 189 160243 1531.5 547 531 104.3
C 15 214 207515 1610.91 556 561 128.5
C 3 233 36759 281.76 556 561 128.5
C 12 249 12402 92.17 556 561 128.5
D 1 52 1429731 11296.17 526 511 126.5
D 12 6 542225 4281.56 526 511 126.5
D 2 16 300962 2374.68 526 511 126.5

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