ASTROSAT CZTI

Data Quality Report

Orbit 14027

Creation date: 2024-06-27T16:49:21.381728
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_002T01_9000002072_14027cztM0_level2.evt modeM0/AS1G08_002T01_9000002072_14027cztM0_level2_quad_clean.evt
Size (bytes)455,690,88093,349,440
Size434.6 MB 89.0 MB
Events in quadrant A3,170,943596,879
Events in quadrant B3,168,095605,039
Events in quadrant C3,293,967605,150
Events in quadrant D3,740,721581,267

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
A0134373
B0133912
C0138152
D0153642

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6283450.716218%
B6283350.557059%
C6283250.397899%
D62831101.750756%

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 7494 6285 9 9 0.12% 0.14%
B 7494 6285 6 6 0.08% 0.10%
C 7494 6285 0 0 0.00% 0.00%
D 7494 6285 44 44 0.59% 0.70%

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 12 189 85661 521.0 798 781 162.9
A 8 15 7326 40.17 798 781 162.9
A 0 226 7029 38.35 798 781 162.9
B 4 173 33957 222.3 790 773 149.3
B 0 189 22774 147.38 790 773 149.3
B 12 111 17708 113.45 790 773 149.3
C 3 233 232138 1272.05 784 788 181.9
C 13 61 5555 26.21 784 788 181.9
C 12 4 4719 21.61 784 788 181.9
D 10 157 480836 2405.48 772 757 199.6
D 1 52 160371 799.76 772 757 199.6
D 8 195 72421 359.08 772 757 199.6

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