ASTROSAT CZTI

Data Quality Report

Orbit 04852

Creation date: 2024-06-27T14:47:59.484838
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/AS1G05_002T01_9000000616_04852cztM0_level2.evt modeM0/AS1G05_002T01_9000000616_04852cztM0_level2_quad_clean.evt
Size (bytes)464,048,64089,245,440
Size442.6 MB 85.1 MB
Events in quadrant A3,500,049554,952
Events in quadrant B3,241,811554,755
Events in quadrant C3,089,133557,915
Events in quadrant D3,736,695537,245

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155383
B0146652
C0145522
D0164332

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7145660.923723%
B7145230.321903%
C7145130.181945%
D71451612.253324%

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 7660 7146 42 42 0.55% 0.59%
B 7660 7146 0 0 0.00% 0.00%
C 7660 7146 0 0 0.00% 0.00%
D 7660 7146 119 119 1.55% 1.67%

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 0 50 297044 1833.64 788 772 161.6
A 8 6 77497 474.85 788 772 161.6
A 13 251 55404 338.12 788 772 161.6
B 14 167 41726 263.56 802 781 155.4
B 10 246 22985 142.92 802 781 155.4
B 15 54 20590 127.51 802 781 155.4
C 9 247 51588 286.32 765 768 177.5
C 12 4 14812 79.12 765 768 177.5
C 8 128 14626 78.07 765 768 177.5
D 13 235 322289 1737.11 758 733 185.1
D 2 136 217924 1173.31 758 733 185.1
D 10 231 75143 401.98 758 733 185.1

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