ASTROSAT CZTI

Data Quality Report

Orbit 37105

Creation date: 2024-06-27T21:35:37.243384
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/AS1A09_138T04_9000005282_37105cztM0_level2.evt modeM0/AS1A09_138T04_9000005282_37105cztM0_level2_quad_clean.evt
Size (bytes)443,995,20077,166,720
Size423.4 MB 73.6 MB
Events in quadrant A2,997,162500,538
Events in quadrant B4,263,550484,683
Events in quadrant C2,789,253485,726
Events in quadrant D3,013,414471,468

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124433
B0163192
C0116062
D0128442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5638801.418943%
B56385048.939340%
C5638110.195105%
D5638801.418943%

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 7071 5638 53 53 0.75% 0.94%
B 7071 5639 414 414 5.85% 7.34%
C 7071 5639 8 8 0.11% 0.14%
D 7071 5639 66 66 0.93% 1.17%

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 272273 2081.43 648 635 130.5
A 15 237 150385 1147.46 648 635 130.5
A 7 16 33925 255.08 648 635 130.5
B 5 184 972080 8102.45 621 603 119.9
B 5 172 626740 5222.2 621 603 119.9
B 5 200 53880 444.35 621 603 119.9
C 15 214 240364 1629.15 630 635 147.1
C 0 10 46926 314.58 630 635 147.1
C 15 208 21623 142.63 630 635 147.1
D 12 233 131688 849.31 632 614 154.3
D 2 250 120266 775.3 632 614 154.3
D 13 171 96626 622.12 632 614 154.3

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