ASTROSAT CZTI

Data Quality Report

Orbit 46731

Creation date: 2024-06-27T23:26:56.849932
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_092T09_9000006258_46731cztM0_level2.fits modeM0/AS1A13_092T09_9000006258_46731cztM0_level2_quad_clean.evt
Size (bytes)489,813,12099,443,520
Size467.1 MB 94.8 MB
Events in quadrant A6,512,682650,248
Events in quadrant B3,424,979677,942
Events in quadrant C2,783,518658,675
Events in quadrant D4,923,790586,109

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0235951
B0146392
C0130731
D0189811

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62702954.704944%
B62691382.201308%
C6270220.350877%
D62703996.363636%

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 7270 6270 153 153 2.10% 2.44%
B 7270 6270 65 65 0.89% 1.04%
C 7270 6271 3 3 0.04% 0.05%
D 7270 6271 369 369 5.08% 5.88%

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 3427888 24712.84 668 653 138.7
A 13 248 265436 1909.28 668 653 138.7
A 9 191 152976 1098.36 668 653 138.7
B 12 16 317340 2358.25 673 653 134.3
B 3 112 97338 719.98 673 653 134.3
B 4 171 92029 680.44 673 653 134.3
C 3 233 93359 580.71 670 674 159.6
C 14 254 53128 328.65 670 674 159.6
C 12 250 13251 78.8 670 674 159.6
D 1 52 1786637 10641.4 658 638 167.8
D 5 171 192500 1143.16 658 638 167.8
D 12 128 163033 967.59 658 638 167.8

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