ASTROSAT CZTI

Data Quality Report

Orbit 20240430_A13_037T01_9000006212_level2

Creation date: 2024-05-09T08:45:54.801129
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_037T01_9000006212cztM0_level2.fits modeM0/AS1A13_037T01_9000006212cztM0_level2_quad_clean.evt
Size (bytes)467,795,520455,068,800
Size446.1 MB 434.0 MB
Events in quadrant A2,748,9542,642,826
Events in quadrant B2,697,5322,690,126
Events in quadrant C2,773,8182,547,833
Events in quadrant D2,356,2502,312,229

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0850
B0850
C0850
D0850

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010660
B010660
C010660
D010660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01805140
B01152920
C01223470
D01442780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5229317603.365651%
B5229311262.153252%
C5229414142.703943%
D5229426195.008223%

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 60803 52288 0 0 0.00% 0.00%
B 60804 52278 0 0 0.00% 0.00%
C 60804 52288 0 0 0.00% 0.00%
D 60804 52271 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 2168 8.13 718 670 184.3
A 0 29 2143 7.99 718 670 184.3
A 14 95 2054 7.51 718 670 184.3
B 2 9 2431 12.51 715 680 139.9
B 2 8 2005 9.47 715 680 139.9
B 3 17 1897 8.7 715 680 139.9
C 1 81 2097 7.41 733 680 191.3
C 3 202 2092 7.38 733 680 191.3
C 3 203 2008 6.94 733 680 191.3
D 10 189 1747 6.0 676 612 189.3
D 4 16 1711 5.81 676 612 189.3
D 15 47 1694 5.72 676 612 189.3

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