ASTROSAT CZTI

Data Quality Report

Orbit 21668

Creation date: 2024-06-27T18:30:52.316563
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/AS1A06_002T02_9000003206_21668cztM0_level2.evt modeM0/AS1A06_002T02_9000003206_21668cztM0_level2_quad_clean.evt
Size (bytes)348,791,04049,138,560
Size332.6 MB 46.9 MB
Events in quadrant A2,350,933310,053
Events in quadrant B2,056,642326,424
Events in quadrant C1,976,317305,447
Events in quadrant D3,904,427260,857

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A096351
B085971
C084001
D0142941

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A403280.198413%
B4032100.248016%
C4032120.297619%
D403246011.408730%

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 4032 4032 1 1 0.02% 0.02%
B 4032 4032 3 3 0.07% 0.07%
C 4032 4032 0 0 0.00% 0.00%
D 4032 4032 452 452 11.21% 11.21%

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 15 236 421956 4208.16 500 491 100.2
A 13 254 6246 57.46 500 491 100.2
A 0 226 4263 37.66 500 491 100.2
B 3 64 33629 345.92 508 496 95.8
B 0 230 21316 217.37 508 496 95.8
B 12 111 10970 109.35 508 496 95.8
C 14 238 78181 682.93 485 490 113.8
C 10 22 4803 37.91 485 490 113.8
C 13 61 3468 26.18 485 490 113.8
D 7 238 1663176 14831.83 463 450 112.1
D 1 52 346896 3090.36 463 450 112.1
D 13 172 62003 549.06 463 450 112.1

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