ASTROSAT CZTI

Data Quality Report

Orbit 37762

Creation date: 2024-06-27T21:44:06.642849
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_106T02_9000005344_37762cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37762cztM0_level2_quad_clean.evt
Size (bytes)448,767,36071,435,520
Size428.0 MB 68.1 MB
Events in quadrant A3,233,090448,201
Events in quadrant B2,733,920459,832
Events in quadrant C2,721,110459,172
Events in quadrant D4,526,132407,564

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130383
B0118832
C0116142
D0172172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5549821.477744%
B5549230.414489%
C5549330.594702%
D55495479.857632%

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 7222 5550 89 89 1.23% 1.60%
B 7222 5550 17 17 0.24% 0.31%
C 7222 5550 31 31 0.43% 0.56%
D 7222 5550 590 590 8.17% 10.63%

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 342924 2777.99 613 602 123.2
A 15 254 331378 2684.3 613 602 123.2
A 9 143 81095 653.21 613 602 123.2
B 0 229 97408 827.47 610 594 117.0
B 5 255 76371 647.66 610 594 117.0
B 5 172 64815 548.9 610 594 117.0
C 15 214 238189 1715.0 597 602 138.5
C 0 10 108962 782.18 597 602 138.5
C 1 23 19007 132.85 597 602 138.5
D 2 249 1755842 12469.27 577 562 140.8
D 2 250 196603 1392.65 577 562 140.8
D 10 199 103282 729.71 577 562 140.8

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