ASTROSAT CZTI

Data Quality Report

Orbit 11408

Creation date: 2024-06-27T16:12:31.059810
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_066T01_9000001668_11408cztM0_level2.evt modeM0/AS1G08_066T01_9000001668_11408cztM0_level2_quad_clean.evt
Size (bytes)488,329,92093,205,440
Size465.7 MB 88.9 MB
Events in quadrant A3,379,944598,443
Events in quadrant B4,330,976591,195
Events in quadrant C3,060,775589,093
Events in quadrant D3,546,964561,247

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147073
B0175022
C0140992
D0155692

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6927440.635196%
B69272844.099899%
C6927100.144363%
D69271552.237621%

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 7777 6928 7 7 0.09% 0.10%
B 7777 6928 156 156 2.01% 2.25%
C 7777 6928 0 0 0.00% 0.00%
D 7777 6928 126 126 1.62% 1.82%

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 5 119499 712.5 812 796 166.6
A 11 29 44427 261.89 812 796 166.6
A 1 162 34085 199.81 812 796 166.6
B 4 239 1042161 6801.03 806 786 153.1
B 3 189 37114 237.25 806 786 153.1
B 15 204 34876 222.64 806 786 153.1
C 13 61 5640 26.48 785 789 183.2
C 3 202 1958 6.38 785 789 183.2
C -1 -1 -1 -1.0 785 789 183.2
D 10 253 396555 2160.31 766 746 183.2
D 1 52 59073 318.35 766 746 183.2
D 2 120 31955 170.34 766 746 183.2

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