ASTROSAT CZTI

Data Quality Report

Orbit 15967

Creation date: 2024-06-27T17:15:49.232057
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/AS1T02_087T01_9000002352_15967cztM0_level2.evt modeM0/AS1T02_087T01_9000002352_15967cztM0_level2_quad_clean.evt
Size (bytes)456,180,48090,691,200
Size435.0 MB 86.5 MB
Events in quadrant A3,166,776585,873
Events in quadrant B4,007,848593,102
Events in quadrant C3,184,923568,044
Events in quadrant D3,017,083548,896

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136783
B0160792
C0135472
D0134822

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6456410.635068%
B64562053.175341%
C6456600.929368%
D6456160.247831%

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 7577 6458 6 6 0.08% 0.09%
B 7577 6458 110 110 1.45% 1.70%
C 7577 6458 1 1 0.01% 0.02%
D 7577 6458 3 3 0.04% 0.05%

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 15 239 54304 324.62 806 790 164.8
A 9 143 10074 56.32 806 790 164.8
A 0 226 7134 38.48 806 790 164.8
B 5 65 551768 3543.91 807 788 155.5
B 4 216 98249 626.87 807 788 155.5
B 0 189 49147 311.05 807 788 155.5
C 14 238 119223 649.98 772 776 182.2
C 3 233 35303 189.47 772 776 182.2
C 10 22 11004 56.13 772 776 182.2
D 12 110 34523 177.28 772 749 190.5
D 2 234 22006 111.58 772 749 190.5
D 15 145 13316 65.97 772 749 190.5

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