ASTROSAT CZTI

Data Quality Report

Orbit 11796

Creation date: 2024-06-27T16:18:23.742854
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_058T09_9000001744_11796cztM0_level2.evt modeM0/AS1G08_058T09_9000001744_11796cztM0_level2_quad_clean.evt
Size (bytes)508,950,72070,084,800
Size485.4 MB 66.8 MB
Events in quadrant A3,637,360422,290
Events in quadrant B4,880,854429,820
Events in quadrant C3,078,561428,765
Events in quadrant D3,390,853402,652

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147642
B0187741
C0129031
D0142251

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6282671.066539%
B62821552.467367%
C6282210.334288%
D6282801.273480%

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 7653 6284 2 2 0.03% 0.03%
B 7653 6284 73 73 0.95% 1.16%
C 7653 6284 0 0 0.00% 0.00%
D 7653 6284 71 71 0.93% 1.13%

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 8 15 289948 1799.65 802 788 160.7
A 1 162 107557 664.5 802 788 160.7
A 1 178 55211 338.71 802 788 160.7
B 10 16 1102035 7321.91 806 791 150.4
B 4 239 430037 2853.96 806 791 150.4
B 3 64 52254 342.17 806 791 150.4
C 7 238 9876 49.78 787 795 182.4
C 13 61 5758 27.2 787 795 182.4
C 14 234 2653 10.18 787 795 182.4
D 1 52 181147 974.64 772 753 185.1
D 13 249 82622 442.32 772 753 185.1
D 13 122 70761 378.24 772 753 185.1

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