ASTROSAT CZTI

Data Quality Report

Orbit 46999

Creation date: 2024-06-27T23:30:33.012965
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/AS1C09_006T01_9000006294_46999cztM0_level2.fits modeM0/AS1C09_006T01_9000006294_46999cztM0_level2_quad_clean.evt
Size (bytes)838,935,36075,942,720
Size800.1 MB 72.4 MB
Events in quadrant A5,932,262649,379
Events in quadrant B14,578,97477,238
Events in quadrant C5,257,373565,236
Events in quadrant D4,811,453579,580

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219071
B0475199
C0198971
D0185361

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61282383.883812%
B6127565192.231108%
C612898416.057441%
D61284146.755875%

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 6898 6129 2 2 0.03% 0.03%
B 6897 6127 5360 5360 77.71% 87.48%
C 6898 6129 848 848 12.29% 13.84%
D 6898 6129 355 355 5.15% 5.79%

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 3175580 22162.68 683 669 143.3
A 9 191 73902 511.21 683 669 143.3
A 0 243 20400 137.73 683 669 143.3
B 3 112 13012764 175351.89 371 360 74.2
B 5 32 40555 541.66 371 360 74.2
B 0 198 37007 493.85 371 360 74.2
C 14 254 2724980 18645.52 619 622 146.1
C 0 207 44662 301.41 619 622 146.1
C 3 233 40060 269.91 619 622 146.1
D 1 52 1273667 7512.3 669 648 169.5
D 13 249 683516 4029.72 669 648 169.5
D 8 48 62244 363.49 669 648 169.5

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