ASTROSAT CZTI

Data Quality Report

Orbit 37892

Creation date: 2024-06-27T21:45:46.730093
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/AS1C07_001T12_9000005352_37892cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37892cztM0_level2_quad_clean.evt
Size (bytes)416,211,84071,481,600
Size396.9 MB 68.2 MB
Events in quadrant A2,782,592450,869
Events in quadrant B2,544,269460,512
Events in quadrant C2,929,485446,041
Events in quadrant D3,969,279416,780

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118223
B0114432
C0121582
D0157992

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A556980.143652%
B5569260.466870%
C5569500.897827%
D55694077.308314%

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 7210 5570 3 3 0.04% 0.05%
B 7210 5570 13 13 0.18% 0.23%
C 7210 5570 39 39 0.54% 0.70%
D 7210 5570 327 327 4.54% 5.87%

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 343420 2789.03 614 602 122.9
A 15 222 29531 235.35 614 602 122.9
A 12 189 11455 88.3 614 602 122.9
B 5 172 59581 496.25 612 593 118.9
B 5 250 21539 176.21 612 593 118.9
B 4 81 17247 140.1 612 593 118.9
C 15 214 233662 1666.11 595 599 139.9
C 14 254 228592 1629.87 595 599 139.9
C 0 10 88747 630.15 595 599 139.9
D 12 233 541662 3774.46 582 564 143.4
D 1 52 410517 2859.65 582 564 143.4
D 2 249 271462 1889.67 582 564 143.4

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