ASTROSAT CZTI

Data Quality Report

Orbit 35648

Creation date: 2024-06-27T21:16:08.644348
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_106T01_9000005102_35648cztM0_level2.evt modeM0/AS1A11_106T01_9000005102_35648cztM0_level2_quad_clean.evt
Size (bytes)4,373,346,240335,361,600
Size4.1 GB 319.8 MB
Events in quadrant A78,002,5231,172,776
Events in quadrant B17,905,7152,305,956
Events in quadrant C18,351,4562,281,056
Events in quadrant D16,049,4262,203,169

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06480
B06480
C06480
D06480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02528696
B0736016
C0733366
D0694096

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0850
B0850
C0850
D0850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A317993172899.776723%
B317996331.990629%
C317995581.754772%
D317993941.239033%

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 40308 31805 30680 30680 76.11% 96.46%
B 40308 31804 401 401 0.99% 1.26%
C 40308 31805 434 434 1.08% 1.36%
D 40308 31805 337 337 0.84% 1.06%

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 15 169 68960993 155235.57 2237 2194 444.2
A 10 83 356286 797.11 2237 2194 444.2
A 12 189 28248 58.65 2237 2194 444.2
B 5 172 3157304 4499.19 3648 3549 701.0
B 0 197 238638 335.38 3648 3549 701.0
B 0 189 92054 126.26 3648 3549 701.0
C 0 10 2043332 2460.79 3600 3626 828.9
C 15 214 1294995 1557.97 3600 3626 828.9
C 9 187 455084 544.66 3600 3626 828.9
D 10 253 587412 673.04 3604 3509 867.6
D 13 249 493384 564.66 3604 3509 867.6
D 2 153 429460 490.98 3604 3509 867.6

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