ASTROSAT CZTI

Data Quality Report

Orbit 41853

Creation date: 2024-06-27T22:33:38.503867
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/AS1C07_001T11_9000005710_41853cztM0_level2.fits modeM0/AS1C07_001T11_9000005710_41853cztM0_level2_quad_clean.evt
Size (bytes)428,803,20086,664,960
Size408.9 MB 82.7 MB
Events in quadrant A4,644,193577,867
Events in quadrant B2,387,828620,386
Events in quadrant C3,594,068556,837
Events in quadrant D4,841,243503,099

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172872
B0107302
C0139822
D0180312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52184137.914910%
B521870.134151%
C52183146.017631%
D521858811.268685%

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 7311 5219 287 287 3.93% 5.50%
B 7311 5219 4 4 0.05% 0.08%
C 7311 5219 309 309 4.23% 5.92%
D 7311 5219 612 612 8.37% 11.73%

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 14 24 1816144 15714.44 566 555 115.5
A 10 83 551914 4772.17 566 555 115.5
A 15 223 54291 465.1 566 555 115.5
B 5 255 78416 708.41 571 556 109.9
B 3 112 31657 282.97 571 556 109.9
B 12 111 13317 116.1 571 556 109.9
C 0 10 1282762 10249.9 537 539 125.1
C 15 214 203307 1620.9 537 539 125.1
C 14 254 6918 50.99 537 539 125.1
D 12 79 1060412 7978.98 543 530 132.8
D 13 249 546977 4113.75 543 530 132.8
D 2 249 438124 3294.28 543 530 132.8

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