ASTROSAT CZTI

Data Quality Report

Orbit 46372

Creation date: 2024-06-27T23:22:20.640746
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_068T02_9000006200_46372cztM0_level2.fits modeM0/AS1A13_068T02_9000006200_46372cztM0_level2_quad_clean.evt
Size (bytes)475,021,440114,880,320
Size453.0 MB 109.6 MB
Events in quadrant A6,180,571769,859
Events in quadrant B3,426,783812,197
Events in quadrant C3,360,498760,619
Events in quadrant D4,111,604682,670

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221983
B0142853
C0144173
D0164683

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64943084.742840%
B64941522.340622%
C64941342.063443%
D64943285.050816%

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 7679 6496 28 28 0.36% 0.43%
B 7679 6496 2 2 0.03% 0.03%
C 7679 6496 48 48 0.63% 0.74%
D 7679 6496 175 175 2.28% 2.69%

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 2994214 18112.88 797 780 165.3
A 0 247 49791 296.56 797 780 165.3
A 2 79 25676 150.64 797 780 165.3
B 5 255 88338 562.0 795 771 155.8
B 15 201 83474 530.79 795 771 155.8
B 0 190 31594 197.82 795 771 155.8
C 14 254 177663 978.58 775 781 180.8
C 9 69 103725 569.52 775 781 180.8
C 12 249 26191 140.58 775 781 180.8
D 5 235 657434 3409.1 767 744 192.6
D 13 249 248521 1286.29 767 744 192.6
D 1 52 108653 560.19 767 744 192.6

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