ASTROSAT CZTI

Data Quality Report

Orbit 43449

Creation date: 2024-06-27T22:52:07.919073
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_018T01_9000005874_43449cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43449cztM0_level2_quad_clean.evt
Size (bytes)661,296,96072,048,960
Size630.7 MB 68.7 MB
Events in quadrant A12,868,852110,118
Events in quadrant B2,764,031607,923
Events in quadrant C2,535,407583,367
Events in quadrant D5,877,486489,758

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420465
B0122202
C0112922
D0214642

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5575464783.354260%
B5575260.466368%
C557550.089686%
D557562711.246637%

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 7098 5576 4518 4518 63.65% 81.03%
B 7098 5576 14 14 0.20% 0.25%
C 7098 5576 0 0 0.00% 0.00%
D 7098 5576 603 603 8.50% 10.81%

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 15 222 10880688 154637.17 340 333 70.4
A 10 83 380153 5398.2 340 333 70.4
A 15 237 284461 4038.17 340 333 70.4
B 0 199 117465 1032.27 589 572 113.2
B 0 190 111200 976.95 589 572 113.2
B 3 112 69062 604.83 589 572 113.2
C 15 214 234662 1753.73 575 579 133.5
C 3 233 35756 263.54 575 579 133.5
C 14 254 16842 121.84 575 579 133.5
D 1 52 2644795 19502.71 550 533 135.6
D 2 16 780394 5751.85 550 533 135.6
D 10 118 158841 1167.6 550 533 135.6

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