ASTROSAT CZTI

Data Quality Report

Orbit 26603

Creation date: 2024-06-27T19:30:53.363622
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/AS1A09_095T02_9000003846_26603cztM0_level2.evt modeM0/AS1A09_095T02_9000003846_26603cztM0_level2_quad_clean.evt
Size (bytes)779,872,320101,309,760
Size743.7 MB 96.6 MB
Events in quadrant A3,030,660752,906
Events in quadrant B4,431,792723,191
Events in quadrant C3,119,129728,454
Events in quadrant D12,639,712451,287

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126570
B0170070
C0128550
D0415930

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5883380.645929%
B58844227.171992%
C5884681.155676%
D5884400768.099932%

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 7137 5882 0 0 0.00% 0.00%
B 7138 5883 279 279 3.91% 4.74%
C 7138 5883 1 1 0.01% 0.02%
D 7138 5883 3986 3986 55.84% 67.75%

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 13 254 9670 57.43 782 766 155.0
A 0 226 6773 38.74 782 766 155.0
A 3 137 6639 37.88 782 766 155.0
B 3 64 1306255 9594.73 738 725 136.1
B 0 189 204485 1497.49 738 725 136.1
B 12 111 15818 110.92 738 725 136.1
C 14 238 122538 712.27 741 745 171.0
C 3 233 81357 471.43 741 745 171.0
C 2 16 16180 90.27 741 745 171.0
D 1 52 9668120 69109.13 527 517 139.9
D 7 80 807622 5769.61 527 517 139.9
D 2 250 103472 735.98 527 517 139.9

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