ASTROSAT CZTI

Data Quality Report

Orbit 39163

Creation date: 2024-06-27T22:01:17.210737
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_054T02_9000005444_39163cztM0_level2.fits modeM0/AS1A12_054T02_9000005444_39163cztM0_level2_quad_clean.evt
Size (bytes)524,649,60090,921,600
Size500.3 MB 86.7 MB
Events in quadrant A3,371,660655,534
Events in quadrant B2,823,292663,073
Events in quadrant C2,797,989637,728
Events in quadrant D9,974,601388,208

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138493
B0125432
C0120572
D0336862

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5836971.662097%
B5836871.490747%
C583670.119945%
D5836222738.159698%

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 8462 5838 66 66 0.78% 1.13%
B 8462 5838 40 40 0.47% 0.69%
C 8462 5838 1 1 0.01% 0.02%
D 8462 5838 1859 1859 21.97% 31.84%

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 10 83 438162 3279.66 655 642 133.4
A 2 79 247423 1849.88 655 642 133.4
A 13 248 143483 1070.74 655 642 133.4
B 5 172 262045 2086.14 645 626 125.3
B 12 111 15804 121.12 645 626 125.3
B 11 111 14281 108.97 645 626 125.3
C 15 214 238984 1611.79 634 636 147.9
C 9 187 77259 518.15 634 636 147.9
C 0 10 6043 36.56 634 636 147.9
D 12 235 7385920 55624.9 537 520 132.8
D 13 171 179180 1345.62 537 520 132.8
D 2 249 138057 1035.89 537 520 132.8

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