ASTROSAT CZTI

Data Quality Report

Orbit 47841

Creation date: 2024-10-15T15:25:07.369071
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/AS1T05_216T01_9000006356_47841cztM0_level2.fits modeM0/AS1T05_216T01_9000006356_47841cztM0_level2_quad_clean.evt
Size (bytes)541,131,840108,285,120
Size516.1 MB 103.3 MB
Events in quadrant A6,773,232707,107
Events in quadrant B3,294,352741,700
Events in quadrant C3,174,134733,369
Events in quadrant D6,250,140612,887

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02567949
B01483612
C01459316
D02337665

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69404626.657061%
B69473004.318411%
C69461522.188310%
D694388312.717845%

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 6982 6952 2 2 0.03% 0.03%
B 6982 6953 12 12 0.17% 0.17%
C 6983 6953 2 2 0.03% 0.03%
D 6982 6946 626 626 8.97% 9.01%

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 10 83 3696109 22320.19 787 766 165.6
A 0 31 18732 108.52 787 766 165.6
A 13 6 9297 51.53 787 766 165.6
B 0 186 64114 405.44 785 759 156.3
B 7 221 45220 284.53 785 759 156.3
B 12 48 27344 170.13 785 759 156.3
C 12 2 59448 316.44 784 786 185.4
C 1 3 22102 114.98 784 786 185.4
C 14 254 18315 94.55 784 786 185.4
D 2 165 1306995 6716.92 763 738 194.5
D 12 2 1299741 6679.62 763 738 194.5
D 12 233 226725 1162.05 763 738 194.5

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