ASTROSAT CZTI

Data Quality Report

Orbit 45242

Creation date: 2024-06-27T23:11:16.155408
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/AS1A13_038T03_9000006058_45242cztM0_level2.fits modeM0/AS1A13_038T03_9000006058_45242cztM0_level2_quad_clean.evt
Size (bytes)481,484,160111,960,000
Size459.2 MB 106.8 MB
Events in quadrant A5,223,725750,302
Events in quadrant B3,149,192794,410
Events in quadrant C3,433,263759,055
Events in quadrant D5,521,769641,402

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0203701
B0135391
C0143821
D0207651

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63801282.006270%
B6379681.065998%
C63801021.598746%
D63806139.608150%

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 7610 6381 20 20 0.26% 0.31%
B 7609 6380 18 18 0.24% 0.28%
C 7610 6381 109 109 1.43% 1.71%
D 7610 6381 545 545 7.16% 8.54%

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 2256526 14578.51 747 731 154.7
A 13 248 72235 462.11 747 731 154.7
A 7 16 8968 53.23 747 731 154.7
B 0 168 51249 342.45 755 731 147.5
B 5 32 40375 268.74 755 731 147.5
B 5 255 28145 185.83 755 731 147.5
C 14 254 351387 2003.71 747 753 175.0
C 2 14 100925 572.44 747 753 175.0
C 1 3 52509 295.76 747 753 175.0
D 13 249 1828872 10137.64 713 692 180.3
D 11 241 303489 1679.07 713 692 180.3
D 5 222 170479 941.5 713 692 180.3

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