ASTROSAT CZTI

Data Quality Report

Orbit 43127

Creation date: 2024-06-27T22:48:22.860605
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/AS1A09_006T07_9000005852_43127cztM0_level2.fits modeM0/AS1A09_006T07_9000005852_43127cztM0_level2_quad_clean.evt
Size (bytes)432,656,64086,359,680
Size412.6 MB 82.4 MB
Events in quadrant A5,916,613511,566
Events in quadrant B3,066,988626,499
Events in quadrant C2,521,710588,026
Events in quadrant D4,111,530529,729

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210922
B0122932
C0104282
D0156342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5128104620.397816%
B5128841.638066%
C512860.117005%
D51282755.362715%

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 7251 5129 840 840 11.58% 16.38%
B 7251 5129 47 47 0.65% 0.92%
C 7251 5129 1 1 0.01% 0.02%
D 7251 5129 191 191 2.63% 3.72%

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 2548760 22992.75 540 528 110.8
A 10 83 534805 4820.79 540 528 110.8
A 15 237 487754 4396.25 540 528 110.8
B 0 186 289268 2525.0 591 576 114.3
B 5 255 247469 2159.41 591 576 114.3
B 0 229 148262 1291.71 591 576 114.3
C 15 214 217798 1605.5 578 583 135.3
C 14 254 26385 190.71 578 583 135.3
C 0 239 16253 115.82 578 583 135.3
D 1 52 1649620 11557.38 574 558 142.7
D 12 0 113644 792.56 574 558 142.7
D 7 223 29494 202.79 574 558 142.7

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