ASTROSAT CZTI

Data Quality Report

Orbit 50118

Creation date: 2025-01-03T04:07:08.163331
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_003T01_9000006442_50118cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50118cztM0_level2_quad_clean.evt
Size (bytes)1,271,272,32056,021,760
Size1.2 GB 53.4 MB
Events in quadrant A14,694,156182,308
Events in quadrant B4,999,609635,812
Events in quadrant C14,735,61768,233
Events in quadrant D12,117,126345,236

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0481671
B0194341
C0482731
D0405913

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6654496174.556658%
B66544747.123535%
C6655599990.142750%
D6654282442.440637%

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 7444 6655 4794 4794 64.40% 72.04%
B 7444 6655 364 364 4.89% 5.47%
C 7445 6656 4470 4470 60.04% 67.16%
D 7444 6655 2999 2999 40.29% 45.06%

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 6 250 5456790 44794.21 478 466 121.8
A 8 8 5130715 42117.27 478 466 121.8
A 0 98 1002507 8226.35 478 466 121.8
B 2 176 1249938 9020.89 659 638 138.5
B 4 206 215273 1549.83 659 638 138.5
B 5 185 208342 1499.78 659 638 138.5
C 4 111 6604666 96399.07 241 240 68.5
C 15 230 2322627 33897.86 241 240 68.5
C 1 60 1962009 28634.24 241 240 68.5
D 12 191 3654302 23182.66 557 539 157.6
D 15 106 1907749 12101.0 557 539 157.6
D 15 168 781249 4953.5 557 539 157.6

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