ASTROSAT CZTI

Data Quality Report

Orbit 20809

Creation date: 2024-06-27T18:19:49.253942
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/AS1A05_013T01_9000003070_20809cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20809cztM0_level2_quad_clean.evt
Size (bytes)349,519,68047,419,200
Size333.3 MB 45.2 MB
Events in quadrant A2,053,801293,187
Events in quadrant B2,232,613292,196
Events in quadrant C2,053,025282,766
Events in quadrant D3,947,031258,921

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011317
B011521
C011428
D011325

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108501893
B0115942244
C0108021906
D0187713900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124
B0102
C0124
D0135

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4401190.431720%
B4414320.724966%
C4386390.889193%
D42972114.910403%

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 8680 4560 1 1 0.01% 0.02%
B 8683 4578 4 4 0.05% 0.09%
C 8680 4546 0 0 0.00% 0.00%
D 8677 4469 190 190 2.19% 4.25%

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 0 253 12650 112.4 527 516 108.0
A 5 98 6135 52.05 527 516 108.0
A 12 96 5146 42.89 527 516 108.0
B 7 220 43469 423.97 528 514 101.3
B 4 171 38372 373.66 528 514 101.3
B 0 189 30777 298.7 528 514 101.3
C 14 238 80616 677.93 503 506 118.2
C 7 247 5447 41.81 503 506 118.2
C 9 54 4351 32.54 503 506 118.2
D 1 20 1774094 14775.11 489 474 120.0
D 1 52 136711 1134.92 489 474 120.0
D 1 239 62008 512.61 489 474 120.0

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