ASTROSAT CZTI

Data Quality Report

Orbit 45851

Creation date: 2024-06-27T23:16:54.010013
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/AS1T05_186T01_9000006130_45851cztM0_level2.fits modeM0/AS1T05_186T01_9000006130_45851cztM0_level2_quad_clean.evt
Size (bytes)611,398,080108,794,880
Size583.1 MB 103.8 MB
Events in quadrant A5,913,823748,394
Events in quadrant B7,392,946721,337
Events in quadrant C3,068,173759,570
Events in quadrant D5,766,473622,756

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214804
B0265392
C0132852
D0213182

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63402584.069401%
B6340100415.835962%
C6340831.309148%
D634077212.176656%

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 7526 6343 11 11 0.15% 0.17%
B 7526 6343 537 537 7.14% 8.47%
C 7526 6343 3 3 0.04% 0.05%
D 7526 6343 632 632 8.40% 9.96%

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 2888823 17935.91 777 763 161.0
A 13 254 9652 55.2 777 763 161.0
A 3 137 8443 47.7 777 763 161.0
B 3 112 3999353 27264.39 756 734 146.7
B 0 189 175380 1190.82 756 734 146.7
B 0 171 91194 616.8 756 734 146.7
C 12 249 31659 171.93 771 777 179.6
C 12 2 10419 53.68 771 777 179.6
C 3 233 10000 51.35 771 777 179.6
D 12 2 1863995 10210.26 730 710 182.5
D 1 52 355927 1946.49 730 710 182.5
D 13 249 219344 1198.05 730 710 182.5

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