ASTROSAT CZTI

Data Quality Report

Orbit 42837

Creation date: 2024-06-27T22:44:50.377853
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/AS1T05_138T01_9000005828_42837cztM0_level2.fits modeM0/AS1T05_138T01_9000005828_42837cztM0_level2_quad_clean.evt
Size (bytes)310,760,64084,640,320
Size296.4 MB 80.7 MB
Events in quadrant A2,941,564565,386
Events in quadrant B2,168,951588,574
Events in quadrant C2,533,592568,977
Events in quadrant D3,481,019499,724

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117722
B097732
C0105432
D0137032

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4853340.700598%
B485370.144241%
C4853200.412116%
D48531763.626623%

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 6975 4854 21 21 0.30% 0.43%
B 6975 4854 0 0 0.00% 0.00%
C 6975 4854 19 19 0.27% 0.39%
D 6975 4854 189 189 2.71% 3.89%

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 535172 4766.73 540 530 112.2
A 15 222 180615 1605.59 540 530 112.2
A 12 189 109588 972.33 540 530 112.2
B 5 255 15131 138.34 544 529 105.5
B 12 111 13182 119.88 544 529 105.5
B 11 111 11777 106.57 544 529 105.5
C 15 214 199872 1602.91 533 537 124.4
C 14 254 155113 1242.99 533 537 124.4
C 7 220 54922 437.33 533 537 124.4
D 1 52 684120 5376.75 517 503 127.1
D 14 49 181768 1425.68 517 503 127.1
D 13 249 178375 1398.99 517 503 127.1

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