ASTROSAT CZTI

Data Quality Report

Orbit 09525

Creation date: 2024-06-27T15:47:16.528706
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/AS1G07_049T01_9000001352_09525cztM0_level2.evt modeM0/AS1G07_049T01_9000001352_09525cztM0_level2_quad_clean.evt
Size (bytes)452,119,680129,974,400
Size431.2 MB 124.0 MB
Events in quadrant A3,313,589890,771
Events in quadrant B3,205,879888,205
Events in quadrant C3,239,486859,933
Events in quadrant D3,495,349848,173

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140463
B0137912
C0141152
D0146522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6442791.226327%
B6442731.133188%
C64421362.111146%
D6442630.977957%

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 7677 6443 2 2 0.03% 0.03%
B 7677 6443 2 2 0.03% 0.03%
C 7677 6443 68 68 0.89% 1.06%
D 7677 6443 19 19 0.25% 0.29%

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 1 162 119482 742.94 793 778 159.8
A 1 178 42730 262.57 793 778 159.8
A 1 161 40643 249.5 793 778 159.8
B 0 214 41274 274.17 790 771 147.7
B 0 219 33075 218.67 790 771 147.7
B 4 80 22290 145.67 790 771 147.7
C 4 254 295504 1724.69 750 754 170.9
C 12 4 12232 67.16 750 754 170.9
C 13 61 5580 28.24 750 754 170.9
D 8 195 205733 1038.32 750 734 197.4
D 2 16 114242 574.92 750 734 197.4
D 12 233 77162 387.11 750 734 197.4

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