ASTROSAT CZTI

Data Quality Report

Orbit 20240510_A13_092T09_9000006238_level2

Creation date: 2024-05-18T08:50:46.809394
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_092T09_9000006238cztM0_level2.fits modeM0/AS1A13_092T09_9000006238cztM0_level2_quad_clean.evt
Size (bytes)355,887,360339,894,720
Size339.4 MB 324.1 MB
Events in quadrant A2,013,8981,935,514
Events in quadrant B2,027,6361,975,893
Events in quadrant C2,128,8841,899,204
Events in quadrant D1,690,5021,570,137

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08620
B08620
C08620
D08620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0690
B0690
C0690
D0690

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01589160
B01068210
C0934700
D01439800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4240638979.189737%
B4240622265.249257%
C424067491.766259%
D42404523112.336100%

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 49311 41277 0 0 0.00% 0.00%
B 49311 41777 0 0 0.00% 0.00%
C 49311 42168 0 0 0.00% 0.00%
D 49311 41389 0 0 0.00% 0.00%

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 14 188 2381 13.88 525 490 136.2
A 14 204 1920 10.5 525 490 136.2
A 7 110 1634 8.4 525 490 136.2
B 2 9 1941 13.33 535 509 107.4
B 3 17 1551 9.7 535 509 107.4
B 2 8 1497 9.2 535 509 107.4
C 3 202 1657 7.69 561 519 148.0
C 7 221 1632 7.52 561 519 148.0
C 3 203 1590 7.24 561 519 148.0
D 7 3 1251 5.99 486 441 135.2
D 12 6 1249 5.98 486 441 135.2
D 3 14 1240 5.91 486 441 135.2

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