ASTROSAT CZTI

Data Quality Report

Orbit 12908

Creation date: 2024-06-27T16:33:48.942707
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/AS1A04_116T01_9000001896_12908cztM0_level2.evt modeM0/AS1A04_116T01_9000001896_12908cztM0_level2_quad_clean.evt
Size (bytes)516,029,760100,137,600
Size492.1 MB 95.5 MB
Events in quadrant A3,469,455666,538
Events in quadrant B5,075,676605,520
Events in quadrant C3,139,540673,385
Events in quadrant D3,509,316640,695

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143533
B0191082
C0134512
D0145232

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6393961.501642%
B639392314.437666%
C6393380.594400%
D6393520.813390%

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 7564 6395 38 38 0.50% 0.59%
B 7564 6395 534 534 7.06% 8.35%
C 7564 6395 0 0 0.00% 0.00%
D 7564 6395 10 10 0.13% 0.16%

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 12 189 212886 1311.9 799 783 161.7
A 15 174 124970 768.12 799 783 161.7
A 1 162 27124 162.92 799 783 161.7
B 4 239 2068771 15164.15 738 721 136.4
B 3 209 65685 476.35 738 721 136.4
B 0 214 22362 158.68 738 721 136.4
C 4 112 68823 376.89 787 791 180.5
C 13 61 5917 28.4 787 791 180.5
C 12 4 3731 16.29 787 791 180.5
D 1 52 441784 2388.15 779 759 184.7
D 13 104 43762 232.86 779 759 184.7
D 8 195 37536 199.15 779 759 184.7

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