ASTROSAT CZTI

Data Quality Report

Orbit 41868

Creation date: 2024-06-27T22:33:50.264937
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/AS1C07_001T11_9000005710_41868cztM0_level2.fits modeM0/AS1C07_001T11_9000005710_41868cztM0_level2_quad_clean.evt
Size (bytes)417,372,48084,182,400
Size398.0 MB 80.3 MB
Events in quadrant A4,295,037566,436
Events in quadrant B3,088,811594,666
Events in quadrant C3,201,198541,798
Events in quadrant D4,458,072479,330

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160772
B0127012
C0126442
D0169092

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52303476.634799%
B5230731.395793%
C52302645.047801%
D523060111.491396%

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 7262 5231 236 236 3.25% 4.51%
B 7262 5231 58 58 0.80% 1.11%
C 7262 5231 258 258 3.55% 4.93%
D 7262 5231 482 482 6.64% 9.21%

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 14 24 1516799 13477.58 553 543 112.5
A 10 83 572599 5084.85 553 543 112.5
A 2 79 48925 430.05 553 543 112.5
B 5 255 464787 4389.44 556 540 105.8
B 0 156 143062 1347.54 556 540 105.8
B 0 190 66655 625.11 556 540 105.8
C 0 10 914493 7449.83 531 534 122.7
C 15 214 206772 1681.08 531 534 122.7
C 15 111 7280 54.99 531 534 122.7
D 13 249 838070 6499.65 526 512 128.9
D 12 79 431595 3345.31 526 512 128.9
D 12 233 389819 3021.12 526 512 128.9

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