ASTROSAT CZTI

Data Quality Report

Orbit 22812

Creation date: 2024-06-27T18:46:06.075052
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/AS1A07_054T01_9000003370_22812cztM0_level2.evt modeM0/AS1A07_054T01_9000003370_22812cztM0_level2_quad_clean.evt
Size (bytes)391,608,000121,907,520
Size373.5 MB 116.3 MB
Events in quadrant A2,832,653857,165
Events in quadrant B2,896,156853,386
Events in quadrant C2,762,883794,685
Events in quadrant D2,989,871798,293

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115911
B0117831
C0114471
D0123741

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5556540.971922%
B5557691.241677%
C5557791.421630%
D5557661.187691%

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 6906 5557 0 0 0.00% 0.00%
B 6907 5558 1 1 0.01% 0.02%
C 6907 5558 2 2 0.03% 0.04%
D 6907 5558 26 26 0.38% 0.47%

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 10502 67.62 732 719 144.7
A 13 254 9818 62.89 732 719 144.7
A 0 226 6455 39.64 732 719 144.7
B 0 190 82186 612.54 713 697 133.0
B 12 111 14914 106.87 713 697 133.0
B 11 111 13183 93.86 713 697 133.0
C 14 238 111343 717.85 675 681 154.2
C 10 22 14220 87.82 675 681 154.2
C 13 61 4709 26.13 675 681 154.2
D 1 239 78197 466.13 700 680 166.3
D 6 112 75986 452.83 700 680 166.3
D 1 52 71375 425.1 700 680 166.3

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