ASTROSAT CZTI

Data Quality Report

Orbit 38186

Creation date: 2024-06-27T21:49:29.840257
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_145T01_9000005370_38186cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38186cztM0_level2_quad_clean.evt
Size (bytes)334,405,440100,488,960
Size318.9 MB 95.8 MB
Events in quadrant A2,961,520682,106
Events in quadrant B2,901,759701,132
Events in quadrant C2,920,553678,942
Events in quadrant D3,186,241613,890

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119643
B0117812
C0116402
D0128682

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A524680.152497%
B52461122.134960%
C5246360.686237%
D52461082.058711%

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 7279 5247 6 6 0.08% 0.11%
B 7279 5247 93 93 1.28% 1.77%
C 7279 5247 34 34 0.47% 0.65%
D 7279 5247 103 103 1.42% 1.96%

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 360090 2825.7 633 623 127.2
A 12 189 128074 1001.87 633 623 127.2
A 9 143 18000 136.6 633 623 127.2
B 4 141 160792 1339.75 633 617 119.6
B 4 171 97713 812.14 633 617 119.6
B 5 172 87004 722.57 633 617 119.6
C 15 214 219606 1509.29 627 632 145.1
C 14 254 218030 1498.42 627 632 145.1
C 0 10 25127 168.83 627 632 145.1
D 13 138 154464 1035.48 619 603 148.6
D 12 235 107382 718.62 619 603 148.6
D 2 16 90020 601.77 619 603 148.6

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