ASTROSAT CZTI

Data Quality Report

Orbit 44834

Creation date: 2024-06-27T23:07:01.541288
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_017T01_9000006028_44834cztM0_level2.fits modeM0/AS1A13_017T01_9000006028_44834cztM0_level2_quad_clean.evt
Size (bytes)540,633,600112,875,840
Size515.6 MB 107.6 MB
Events in quadrant A5,328,202766,557
Events in quadrant B3,650,549789,880
Events in quadrant C3,245,680750,690
Events in quadrant D7,272,251646,902

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0212202
B0152452
C0142312
D0261756

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66572123.184618%
B66571732.598768%
C66571001.502178%
D66566589.885817%

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 7757 6658 8 8 0.10% 0.12%
B 7757 6658 60 60 0.77% 0.90%
C 7757 6658 23 23 0.30% 0.35%
D 7756 6657 558 558 7.19% 8.38%

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 2224579 13615.51 786 770 163.3
A 13 248 40676 244.33 786 770 163.3
A 2 79 12701 73.05 786 770 163.3
B 0 186 141459 903.46 781 758 155.7
B 0 155 112405 716.9 781 758 155.7
B 0 219 78351 498.23 781 758 155.7
C 14 254 122070 671.1 772 776 180.7
C 3 233 60921 332.77 772 776 180.7
C 12 2 26111 140.18 772 776 180.7
D 13 187 2631279 14130.92 747 726 186.2
D 5 235 502905 2697.63 747 726 186.2
D 8 129 435218 2334.02 747 726 186.2

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