ASTROSAT CZTI

Data Quality Report

Orbit 41841

Creation date: 2024-06-27T22:33:29.682316
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_099T04_9000005708_41841cztM0_level2.fits modeM0/AS1A12_099T04_9000005708_41841cztM0_level2_quad_clean.evt
Size (bytes)381,409,92095,379,840
Size363.7 MB 91.0 MB
Events in quadrant A4,378,753635,642
Events in quadrant B2,612,774658,363
Events in quadrant C3,355,537599,579
Events in quadrant D3,313,673583,270

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168043
B0119632
C0137652
D0140952

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58832634.470508%
B5883140.237974%
C58832394.062553%
D5883841.427843%

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 7316 5884 186 186 2.54% 3.16%
B 7316 5884 2 2 0.03% 0.03%
C 7316 5884 235 235 3.21% 3.99%
D 7316 5884 80 80 1.09% 1.36%

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 1124204 8813.82 624 611 127.5
A 10 83 597810 4684.62 624 611 127.5
A 2 79 231655 1812.38 624 611 127.5
B 0 156 49294 397.61 627 609 122.4
B 15 35 24655 196.39 627 609 122.4
B 4 141 22663 180.12 627 609 122.4
C 0 10 817764 5975.08 588 592 136.8
C 15 214 231085 1685.34 588 592 136.8
C 14 254 6258 41.43 588 592 136.8
D 5 222 343041 2296.46 609 592 149.1
D 13 249 250136 1673.44 609 592 149.1
D 12 79 142479 951.49 609 592 149.1

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