ASTROSAT CZTI

Data Quality Report

Orbit 43922

Creation date: 2024-06-27T22:57:13.833086
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/AS1A13_023T01_9000005916_43922cztM0_level2.fits modeM0/AS1A13_023T01_9000005916_43922cztM0_level2_quad_clean.evt
Size (bytes)450,463,680114,304,320
Size429.6 MB 109.0 MB
Events in quadrant A5,863,559741,011
Events in quadrant B3,367,960804,715
Events in quadrant C3,156,116767,523
Events in quadrant D3,777,537690,398

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221752
B0142002
C0136982
D0156142

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65593815.808812%
B6560731.112805%
C6560280.426829%
D65601201.829268%

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 8889 6562 216 216 2.43% 3.29%
B 8890 6563 10 10 0.11% 0.15%
C 8890 6563 0 0 0.00% 0.00%
D 8890 6563 81 81 0.91% 1.23%

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 10 83 1133381 7173.16 756 740 157.9
A 15 222 898148 5683.4 756 740 157.9
A 15 223 440470 2784.86 756 740 157.9
B 5 235 86733 565.97 776 755 151.9
B 0 199 64698 420.92 776 755 151.9
B 5 172 56762 368.68 776 755 151.9
C 10 22 83055 458.32 768 775 179.5
C 3 233 50186 275.23 768 775 179.5
C 14 254 13362 70.11 768 775 179.5
D 1 52 250348 1309.3 756 734 190.6
D 5 235 140647 733.89 756 734 190.6
D 13 249 70780 367.41 756 734 190.6

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