ASTROSAT CZTI

Data Quality Report

Orbit 20240803_A09_038T01_9000006360_level2

Creation date: 2024-08-06T09:05:41.741846
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_038T01_9000006360cztM0_level2.fits modeM0/AS1A09_038T01_9000006360cztM0_level2_quad_clean.evt
Size (bytes)81,345,600126,187,200
Size77.6 MB 120.3 MB
Events in quadrant A469,284827,794
Events in quadrant B467,132856,356
Events in quadrant C483,372841,664
Events in quadrant D370,456622,807

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0342280
B0200450
C0198320
D0443160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01940
B01940
C01940
D01940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A97012252.319349%
B9702840.865801%
C9702190.195836%
D9702206021.232736%

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 9701 9701 0 0 0.00% 0.00%
B 9701 9701 0 0 0.00% 0.00%
C 9701 9701 0 0 0.00% 0.00%
D 9701 9688 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 7 110 394 8.27 122 114 33.8
A 15 236 379 7.83 122 114 33.8
A 14 95 368 7.51 122 114 33.8
B 2 9 448 12.23 123 117 27.1
B 2 8 342 8.31 123 117 27.1
B 3 17 319 7.46 123 117 27.1
C 1 80 378 7.52 127 119 34.4
C 1 81 370 7.29 127 119 34.4
C 15 127 351 6.74 127 119 34.4
D 15 46 275 5.73 106 96 31.2
D 6 231 274 5.7 106 96 31.2
D 12 6 272 5.64 106 96 31.2

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