ASTROSAT CZTI

Data Quality Report

Orbit 37657

Creation date: 2024-06-27T21:42:45.089260
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/AS1A11_075T01_9000005342_37657cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37657cztM0_level2_quad_clean.evt
Size (bytes)547,349,76085,970,880
Size522.0 MB 82.0 MB
Events in quadrant A4,018,933537,313
Events in quadrant B3,258,063556,933
Events in quadrant C3,240,357561,426
Events in quadrant D5,622,851498,198

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161093
B0138412
C0135622
D0211842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6437570.885506%
B6437290.450520%
C643780.124281%
D64374677.254932%

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 9064 6439 40 40 0.44% 0.62%
B 9064 6437 15 15 0.17% 0.23%
C 9064 6437 7 7 0.08% 0.11%
D 9064 6437 406 406 4.48% 6.31%

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 15 222 667522 4540.19 731 717 146.9
A 10 83 354700 2410.23 731 717 146.9
A 9 143 118564 802.41 731 717 146.9
B 5 172 139698 979.81 735 716 141.8
B 15 85 55546 386.55 735 716 141.8
B 0 230 37642 260.33 735 716 141.8
C 15 214 296062 1751.1 722 726 168.7
C 14 254 62619 366.97 722 726 168.7
C 0 10 45913 267.92 722 726 168.7
D 12 227 1778392 10589.33 695 677 167.9
D 4 239 378156 2248.53 695 677 167.9
D 2 249 270375 1606.51 695 677 167.9

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