ASTROSAT CZTI

Data Quality Report

Orbit 20642

Creation date: 2024-06-27T18:17:56.112186
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_103T05_9000003052_20642cztM0_level2.evt modeM0/AS1A05_103T05_9000003052_20642cztM0_level2_quad_clean.evt
Size (bytes)478,831,680100,405,440
Size456.6 MB 95.8 MB
Events in quadrant A3,332,459670,924
Events in quadrant B3,412,666668,546
Events in quadrant C3,066,252641,002
Events in quadrant D4,263,518621,647

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140321
B0141771
C0131001
D0167991

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6284771.225334%
B6285931.479714%
C6285821.304694%
D62851161.845664%

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 7499 6285 6 6 0.08% 0.10%
B 7500 6286 19 19 0.25% 0.30%
C 7500 6286 0 0 0.00% 0.00%
D 7500 6286 62 62 0.83% 0.99%

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 12 16 171993 1082.13 796 782 158.2
A 5 16 45194 280.7 796 782 158.2
A 12 194 35174 217.37 796 782 158.2
B 7 220 120265 806.38 787 769 148.2
B 0 219 53896 358.51 787 769 148.2
B 0 189 49169 326.61 787 769 148.2
C 14 238 118782 683.75 746 749 172.6
C 7 247 26390 148.54 746 749 172.6
C 13 61 5382 26.84 746 749 172.6
D 1 52 877322 4788.64 757 735 183.1
D 2 165 197454 1074.64 757 735 183.1
D 7 238 187411 1019.78 757 735 183.1

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