ASTROSAT CZTI

Data Quality Report

Orbit 42936

Creation date: 2024-06-27T22:45:59.311933
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/AS1T05_143T01_9000005830_42936cztM0_level2.fits modeM0/AS1T05_143T01_9000005830_42936cztM0_level2_quad_clean.evt
Size (bytes)341,703,36096,131,520
Size325.9 MB 91.7 MB
Events in quadrant A3,190,056663,702
Events in quadrant B2,771,913665,057
Events in quadrant C2,678,808625,560
Events in quadrant D3,586,955578,031

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128362
B0118042
C0111942
D0142642

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0320
C0320
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5409581.072287%
B5409711.312627%
C5409150.277316%
D54091031.904234%

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 7292 5410 35 35 0.48% 0.65%
B 7292 5410 54 54 0.74% 1.00%
C 7292 5410 13 13 0.18% 0.24%
D 7292 5410 122 122 1.67% 2.26%

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 609562 4804.15 620 609 126.8
A 15 222 155527 1222.18 620 609 126.8
A 13 248 27004 208.24 620 609 126.8
B 4 81 152041 1292.82 609 591 117.1
B 4 171 135468 1151.35 609 591 117.1
B 15 32 56507 477.32 609 591 117.1
C 15 214 235558 1681.15 601 605 139.8
C 12 249 50855 359.55 601 605 139.8
C 14 254 34253 240.76 601 605 139.8
D 1 47 474447 3267.37 601 584 145.0
D 12 233 351991 2423.02 601 584 145.0
D 12 6 190873 1312.08 601 584 145.0

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