ASTROSAT CZTI

Data Quality Report

Orbit 14156

Creation date: 2024-06-27T16:51:10.589070
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/AS1G08_045T01_9000002092_14156cztM0_level2.evt modeM0/AS1G08_045T01_9000002092_14156cztM0_level2_quad_clean.evt
Size (bytes)606,363,84068,823,360
Size578.3 MB 65.6 MB
Events in quadrant A3,436,399422,770
Events in quadrant B6,083,861428,458
Events in quadrant C3,627,311403,919
Events in quadrant D4,785,740384,580

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140923
B0222962
C0146562
D0188362

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63661211.900723%
B6366102216.054037%
C6366821.288093%
D63662233.502985%

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 7657 6368 3 3 0.04% 0.05%
B 7657 6368 528 528 6.90% 8.29%
C 7657 6368 1 1 0.01% 0.02%
D 7657 6368 95 95 1.24% 1.49%

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 9 143 48340 269.55 875 858 176.2
A 12 189 20629 112.24 875 858 176.2
A 0 226 7676 38.71 875 858 176.2
B 0 85 2653431 17424.81 817 801 152.2
B 0 189 115823 755.57 817 801 152.2
B 3 209 40724 262.25 817 801 152.2
C 3 233 378222 1976.26 832 838 191.0
C 13 61 6007 27.07 832 838 191.0
C 14 234 5341 23.58 832 838 191.0
D 8 195 586596 3003.33 829 811 195.0
D 1 52 449219 2299.0 829 811 195.0
D 15 0 348978 1785.06 829 811 195.0

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