ASTROSAT CZTI

Data Quality Report

Orbit 38187

Creation date: 2024-06-27T21:49:30.749064
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/AS1A07_145T01_9000005370_38187cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38187cztM0_level2_quad_clean.evt
Size (bytes)339,431,04097,992,000
Size323.7 MB 93.5 MB
Events in quadrant A2,867,546671,558
Events in quadrant B3,009,073681,925
Events in quadrant C2,711,514669,022
Events in quadrant D3,575,603584,409

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115653
B0120452
C0108942
D0140502

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5145140.272109%
B51451763.420797%
C5145140.272109%
D51452645.131195%

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 7268 5146 6 6 0.08% 0.12%
B 7268 5146 134 134 1.84% 2.60%
C 7268 5146 12 12 0.17% 0.23%
D 7268 5146 261 261 3.59% 5.07%

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 356498 2846.07 624 612 125.0
A 12 189 66843 529.66 624 612 125.0
A 9 143 20498 159.03 624 612 125.0
B 4 171 293038 2484.24 620 605 117.7
B 4 141 162523 1375.51 620 605 117.7
B 5 172 53010 445.18 620 605 117.7
C 15 214 214612 1503.07 616 622 142.4
C 14 254 50086 347.43 616 622 142.4
C 0 10 22771 155.57 616 622 142.4
D 7 38 373583 2607.91 592 578 143.0
D 12 227 304654 2125.98 592 578 143.0
D 2 16 206845 1442.14 592 578 143.0

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