ASTROSAT CZTI

Data Quality Report

Orbit 41155

Creation date: 2024-06-27T22:25:08.875250
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_025T12_9000005604_41155cztM0_level2.fits modeM0/AS1A12_025T12_9000005604_41155cztM0_level2_quad_clean.evt
Size (bytes)331,346,88095,552,640
Size316.0 MB 91.1 MB
Events in quadrant A2,985,110660,620
Events in quadrant B2,556,617685,627
Events in quadrant C3,304,631617,489
Events in quadrant D3,019,525570,713

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118013
B0105612
C0130032
D0122012

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5129120.233964%
B512970.136479%
C51291142.222655%
D51291412.749074%

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 7162 5130 3 3 0.04% 0.06%
B 7162 5130 0 0 0.00% 0.00%
C 7162 5130 110 110 1.54% 2.14%
D 7162 5130 116 116 1.62% 2.26%

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 499471 3865.46 635 622 129.1
A 2 79 30292 229.91 635 622 129.1
A 13 254 7918 56.53 635 622 129.1
B 0 245 50253 407.9 628 614 121.7
B 0 190 30273 243.72 628 614 121.7
B 12 111 15006 118.26 628 614 121.7
C 9 54 409963 2928.24 600 604 139.8
C 0 10 238027 1698.34 600 604 139.8
C 15 214 224033 1598.24 600 604 139.8
D 13 249 396211 2666.17 603 586 148.4
D 2 16 104018 697.04 603 586 148.4
D 9 19 100612 674.09 603 586 148.4

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