ASTROSAT CZTI

Data Quality Report

Orbit 39430

Creation date: 2024-06-27T22:04:27.702091
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_077T06_9000005474_39430cztM0_level2.fits modeM0/AS1A12_077T06_9000005474_39430cztM0_level2_quad_clean.evt
Size (bytes)439,076,16089,072,640
Size418.7 MB 84.9 MB
Events in quadrant A4,619,123607,189
Events in quadrant B2,508,011641,300
Events in quadrant C4,400,021571,784
Events in quadrant D4,318,354509,440

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173623
B0110882
C0165692
D0165522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52472154.097580%
B5247440.838574%
C52474448.461978%
D524754110.310654%

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 7130 5248 133 133 1.87% 2.53%
B 7130 5248 25 25 0.35% 0.48%
C 7130 5248 396 396 5.55% 7.55%
D 7130 5248 464 464 6.51% 8.84%

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 1852266 15718.49 581 571 117.8
A 10 83 430158 3646.64 581 571 117.8
A 2 79 51887 435.61 581 571 117.8
B 8 3 112077 989.8 589 573 112.7
B 5 172 54117 475.3 589 573 112.7
B 5 255 17123 146.91 589 573 112.7
C 15 208 1782694 13615.7 560 565 130.9
C 15 214 215416 1641.49 560 565 130.9
C 9 187 122150 928.93 560 565 130.9
D 12 227 1046762 7892.99 546 529 132.6
D 13 249 581187 4380.6 546 529 132.6
D 2 153 314560 2369.11 546 529 132.6

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