ASTROSAT CZTI

Data Quality Report

Orbit 46886

Creation date: 2024-06-27T23:28:58.806281
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/AS1A13_053T01_9000006274_46886cztM0_level2.fits modeM0/AS1A13_053T01_9000006274_46886cztM0_level2_quad_clean.evt
Size (bytes)347,745,60073,376,640
Size331.6 MB 70.0 MB
Events in quadrant A4,064,156493,640
Events in quadrant B3,434,798496,230
Events in quadrant C1,980,083476,940
Events in quadrant D3,028,067425,128

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147790
B0134140
C096060
D0125400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A469590.191693%
B46951022.172524%
C4695200.425985%
D46952675.686901%

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 4695 4695 4 4 0.09% 0.09%
B 4695 4695 54 54 1.15% 1.15%
C 4695 4695 18 18 0.38% 0.38%
D 4695 4695 239 239 5.09% 5.09%

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 10 83 2112765 20479.95 491 479 103.1
A 13 248 38652 370.11 491 479 103.1
A 13 254 6642 59.75 491 479 103.1
B 3 112 1343962 14030.37 483 469 95.8
B 15 36 38598 398.19 483 469 95.8
B 4 171 34645 356.91 483 469 95.8
C 14 254 91407 793.94 483 485 114.5
C 13 61 3212 23.81 483 485 114.5
C 14 67 2823 20.42 483 485 114.5
D 13 249 498877 4160.69 474 459 119.8
D 2 249 489894 4085.7 474 459 119.8
D 12 233 143628 1195.14 474 459 119.8

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