ASTROSAT CZTI

Data Quality Report

Orbit 18148

Creation date: 2024-06-27T17:45:43.332569
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/AS1A05_082T08_9000002698_18148cztM0_level2.evt modeM0/AS1A05_082T08_9000002698_18148cztM0_level2_quad_clean.evt
Size (bytes)499,939,20096,816,960
Size476.8 MB 92.3 MB
Events in quadrant A3,278,763630,144
Events in quadrant B3,321,498638,474
Events in quadrant C3,317,107610,655
Events in quadrant D4,778,217595,330

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137232
B0137622
C0137022
D0186482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6557340.518530%
B6557470.716791%
C6557630.960805%
D65572694.102486%

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 7717 6558 0 0 0.00% 0.00%
B 7717 6558 8 8 0.10% 0.12%
C 7717 6558 11 11 0.14% 0.17%
D 7717 6558 195 195 2.53% 2.97%

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 4 2 30379 175.71 833 818 168.2
A 15 174 25643 147.56 833 818 168.2
A 15 9 16018 90.35 833 818 168.2
B 7 220 33507 210.87 822 802 155.1
B 0 189 26220 163.88 822 802 155.1
B 3 64 25369 158.4 822 802 155.1
C 14 238 122202 660.83 787 792 183.7
C 3 233 120362 650.81 787 792 183.7
C 13 61 5505 25.65 787 792 183.7
D 7 238 1357409 6972.49 789 764 194.6
D 11 176 170507 872.39 789 764 194.6
D 12 110 89742 457.3 789 764 194.6

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