ASTROSAT CZTI

Data Quality Report

Orbit 39519

Creation date: 2024-06-27T22:05:36.707038
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/AS1A12_018T01_9000005488_39519cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39519cztM0_level2_quad_clean.evt
Size (bytes)334,517,76089,400,960
Size319.0 MB 85.3 MB
Events in quadrant A2,585,938605,589
Events in quadrant B2,213,587631,329
Events in quadrant C3,724,297584,776
Events in quadrant D3,477,781542,354

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107883
B098802
C0143872
D0136272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4892160.327065%
B489260.122649%
C48922374.844644%
D48921643.352412%

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 6985 4893 6 6 0.09% 0.12%
B 6985 4893 0 0 0.00% 0.00%
C 6985 4893 202 202 2.89% 4.13%
D 6985 4893 192 192 2.75% 3.92%

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 407439 3637.41 552 542 111.9
A 15 174 21776 189.82 552 542 111.9
A 13 248 8960 75.25 552 542 111.9
B 5 255 31929 298.06 556 543 105.3
B 12 111 12891 117.27 556 543 105.3
B 11 111 11678 105.75 556 543 105.3
C 9 187 1361010 10880.24 542 547 125.0
C 15 214 203758 1625.17 542 547 125.0
C 4 111 12040 91.91 542 547 125.0
D 12 227 1047496 7966.82 539 525 131.4
D 13 249 239428 1817.91 539 525 131.4
D 2 249 104401 790.43 539 525 131.4

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