ASTROSAT CZTI

Data Quality Report

Orbit 40261

Creation date: 2024-06-27T22:14:19.027344
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_022T01_9000005536_40261cztM0_level2.fits modeM0/AS1A12_022T01_9000005536_40261cztM0_level2_quad_clean.evt
Size (bytes)370,031,04087,851,520
Size352.9 MB 83.8 MB
Events in quadrant A2,914,714591,477
Events in quadrant B2,518,275615,000
Events in quadrant C3,116,795587,834
Events in quadrant D4,725,708486,704

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121752
B0111781
C0127621
D0179391

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5416601.107829%
B5416220.406204%
C5416921.698671%
D541672813.441654%

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 9149 5418 27 27 0.30% 0.50%
B 9149 5418 4 4 0.04% 0.07%
C 9149 5418 100 100 1.09% 1.85%
D 9149 5418 699 699 7.64% 12.90%

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 461737 3859.29 582 571 119.5
A 13 248 175497 1463.88 582 571 119.5
A 13 6 9602 75.58 582 571 119.5
B 0 245 142388 1244.56 584 568 114.0
B 5 255 52501 455.74 584 568 114.0
B 0 230 17002 144.22 584 568 114.0
C 14 254 575209 4313.66 570 573 133.2
C 15 214 231797 1735.75 570 573 133.2
C 15 208 39204 289.99 570 573 133.2
D 12 227 1190468 9040.9 537 523 131.6
D 12 79 744844 5655.16 537 523 131.6
D 1 47 521100 3955.21 537 523 131.6

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