ASTROSAT CZTI

Data Quality Report

Orbit 33935

Creation date: 2024-06-27T20:54:18.513743
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/AS1A11_046T03_9000004848_33935cztM0_level2.evt modeM0/AS1A11_046T03_9000004848_33935cztM0_level2_quad_clean.evt
Size (bytes)299,496,96048,225,600
Size285.6 MB 46.0 MB
Events in quadrant A2,613,929307,395
Events in quadrant B1,922,137316,241
Events in quadrant C1,797,131315,766
Events in quadrant D2,522,609296,919

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A097652
B077421
C072981
D096511

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A31411595.062082%
B31411163.693091%
C3141491.560013%
D31411243.947787%

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 4454 3142 116 116 2.60% 3.69%
B 4454 3142 67 67 1.50% 2.13%
C 4454 3142 28 28 0.63% 0.89%
D 4454 3142 91 91 2.04% 2.90%

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 15 169 1156406 15382.18 371 364 75.2
A 0 31 9456 120.98 371 364 75.2
A 10 83 7439 94.14 371 364 75.2
B 5 172 340226 4718.16 366 356 72.0
B 3 112 38399 528.12 366 356 72.0
B 0 229 28334 388.39 366 356 72.0
C 15 214 135398 1594.61 359 361 84.7
C 0 10 129046 1519.6 359 361 84.7
C 14 67 71692 842.32 359 361 84.7
D 8 195 465734 4856.08 354 347 95.8
D 8 230 213501 2224.15 354 347 95.8
D 13 249 188212 1960.28 354 347 95.8

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