ASTROSAT CZTI

Data Quality Report

Orbit 20815

Creation date: 2024-06-27T18:19:52.611268
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_013T01_9000003070_20815cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20815cztM0_level2_quad_clean.evt
Size (bytes)487,031,040115,349,760
Size464.5 MB 110.0 MB
Events in quadrant A3,042,103800,823
Events in quadrant B3,460,797788,047
Events in quadrant C3,210,657756,336
Events in quadrant D4,647,933748,183

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125151
B0139811
C0131171
D0182931

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57281061.850559%
B57291502.618258%
C57282374.137570%
D57282003.491620%

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 7063 5728 0 0 0.00% 0.00%
B 7064 5729 35 35 0.50% 0.61%
C 7063 5728 79 79 1.12% 1.38%
D 7063 5728 123 123 1.74% 2.15%

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 13 252 7395 42.26 789 775 156.6
A 0 226 7022 39.88 789 775 156.6
A 3 137 5799 32.07 789 775 156.6
B 7 220 225465 1583.05 767 750 142.0
B 0 189 76789 535.67 767 750 142.0
B 4 216 38891 268.69 767 750 142.0
C 9 54 206482 1217.24 739 746 169.0
C 14 238 120137 706.38 739 746 169.0
C 13 61 5222 26.48 739 746 169.0
D 1 20 822127 4586.2 763 745 179.1
D 1 52 659781 3679.74 763 745 179.1
D 9 1 248773 1384.87 763 745 179.1

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