ASTROSAT CZTI

Data Quality Report

Orbit 40241

Creation date: 2024-06-27T22:14:01.584586
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/AS1T05_086T01_9000005534_40241cztM0_level2.fits modeM0/AS1T05_086T01_9000005534_40241cztM0_level2_quad_clean.evt
Size (bytes)348,750,72096,292,800
Size332.6 MB 91.8 MB
Events in quadrant A3,543,919645,525
Events in quadrant B2,605,526678,653
Events in quadrant C2,639,226639,024
Events in quadrant D3,707,027580,508

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138383
B0111372
C0110192
D0146562

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53161863.498871%
B5316250.470278%
C5316170.319789%
D53161372.577126%

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 7200 5317 131 131 1.82% 2.46%
B 7200 5317 15 15 0.21% 0.28%
C 7200 5317 11 11 0.15% 0.21%
D 7200 5317 112 112 1.56% 2.11%

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 13 248 590597 4819.89 597 587 122.4
A 10 83 502550 4100.62 597 587 122.4
A 2 79 84087 682.12 597 587 122.4
B 5 255 45248 379.06 605 589 117.8
B 15 85 36106 301.47 605 589 117.8
B 0 245 32493 270.8 605 589 117.8
C 15 214 227787 1641.36 596 602 138.4
C 0 10 62151 444.68 596 602 138.4
C 9 187 14856 102.98 596 602 138.4
D 12 227 822937 5728.9 588 574 143.5
D 13 249 254052 1765.83 588 574 143.5
D 9 19 92901 643.19 588 574 143.5

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