ASTROSAT CZTI

Data Quality Report

Orbit 03818

Creation date: 2024-06-27T14:33:56.432619
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_189T01_9000000492_03818cztM0_level2.evt modeM0/AS1G05_189T01_9000000492_03818cztM0_level2_quad_clean.evt
Size (bytes)421,680,96068,725,440
Size402.1 MB 65.5 MB
Events in quadrant A2,904,991423,600
Events in quadrant B4,071,450421,477
Events in quadrant C2,639,311415,987
Events in quadrant D2,750,017404,158

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127112
B0161241
C0121741
D0125821

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5947721.210694%
B59473806.389776%
C5947410.689423%
D5947430.723054%

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 7052 5947 7 7 0.10% 0.12%
B 7052 5947 266 266 3.77% 4.47%
C 7052 5947 0 0 0.00% 0.00%
D 7052 5947 13 13 0.18% 0.22%

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 0 199 183889 1298.9 693 679 141.1
A 0 226 22671 155.92 693 679 141.1
A 13 251 19574 133.96 693 679 141.1
B 14 167 1261756 9500.65 689 673 132.7
B 15 204 99743 746.37 689 673 132.7
B 0 173 32734 241.54 689 673 132.7
C 9 247 6147 34.74 672 675 157.5
C 13 61 5602 31.28 672 675 157.5
C 1 16 5163 28.49 672 675 157.5
D 13 223 131352 814.58 667 651 160.5
D 12 227 32006 195.42 667 651 160.5
D 13 137 14037 83.43 667 651 160.5

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