ASTROSAT CZTI

Data Quality Report

Orbit 38040

Creation date: 2024-06-27T21:47:38.915915
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/AS1A11_024T01_9000005358_38040cztM0_level2.fits modeM0/AS1A11_024T01_9000005358_38040cztM0_level2_quad_clean.evt
Size (bytes)335,813,760100,906,560
Size320.3 MB 96.2 MB
Events in quadrant A2,981,875688,544
Events in quadrant B3,041,251711,389
Events in quadrant C2,900,129673,710
Events in quadrant D3,091,387607,605

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119183
B0122042
C0114752
D0125042

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5344260.486527%
B5344861.609281%
C5344190.355539%
D5344821.534431%

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 7257 5345 12 12 0.17% 0.22%
B 7257 5345 55 55 0.76% 1.03%
C 7257 5345 12 12 0.17% 0.22%
D 7257 5344 68 68 0.94% 1.27%

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 357164 2662.29 658 646 133.9
A 13 248 41175 302.65 658 646 133.9
A 13 6 12774 90.56 658 646 133.9
B 4 171 159948 1272.06 658 643 125.2
B 5 172 147453 1172.29 658 643 125.2
B 5 255 51406 405.35 658 643 125.2
C 15 214 228989 1544.91 643 649 147.8
C 1 23 109657 737.53 643 649 147.8
C 3 233 32614 216.27 643 649 147.8
D 12 227 151005 987.72 634 620 152.3
D 7 223 124139 811.27 634 620 152.3
D 13 249 101978 665.71 634 620 152.3

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