ASTROSAT CZTI

Data Quality Report

Orbit 48085

Creation date: 2024-08-19T11:31:48.055251
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_071T07_9000006398_48085cztM0_level2.fits modeM0/AS1A13_071T07_9000006398_48085cztM0_level2_quad_clean.evt
Size (bytes)412,591,68081,757,440
Size393.5 MB 78.0 MB
Events in quadrant A6,943,935686,644
Events in quadrant B1,121,486102
Events in quadrant C2,756,317705,841
Events in quadrant D3,940,387631,171

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250402
B069492
C0132382
D0165122

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64723475.361557%
B6472647199.984549%
C6472120.185414%
D64721602.472188%

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 7617 6473 165 165 2.17% 2.55%
B 7616 6471 0 0 0.00% 0.00%
C 7617 6473 3 3 0.04% 0.05%
D 7617 6473 153 153 2.01% 2.36%

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 4174251 28932.96 695 682 144.2
A 7 3 40377 275.18 695 682 144.2
A 14 248 22046 148.1 695 682 144.2
B 2 177 894155 80861.02 44 43 11.1
B 4 21 38928 3516.65 44 43 11.1
B 0 197 4328 387.52 44 43 11.1
C 14 254 28757 174.82 689 693 160.5
C 12 2 12396 72.9 689 693 160.5
C 12 250 11486 67.23 689 693 160.5
D 2 249 947475 5542.59 679 654 170.8
D 14 34 147516 859.72 679 654 170.8
D 11 224 100590 585.02 679 654 170.8

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