ASTROSAT CZTI

Data Quality Report

Orbit 26484

Creation date: 2024-06-27T19:29:36.374421
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/AS1A07_146T01_9000003828_26484cztM0_level2.evt modeM0/AS1A07_146T01_9000003828_26484cztM0_level2_quad_clean.evt
Size (bytes)434,059,20072,509,760
Size414.0 MB 69.2 MB
Events in quadrant A3,023,082449,448
Events in quadrant B3,098,695457,423
Events in quadrant C3,102,104431,054
Events in quadrant D3,503,654428,161

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127590
B0129100
C0129040
D0142730

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6147510.829673%
B6147701.138767%
C6147641.041158%
D6147811.317716%

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 7167 6147 0 0 0.00% 0.00%
B 7167 6147 4 4 0.06% 0.07%
C 7167 6147 0 0 0.00% 0.00%
D 7167 6147 42 42 0.59% 0.68%

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 13 254 9251 53.91 783 766 157.4
A 3 137 7123 40.39 783 766 157.4
A 0 226 6649 37.38 783 766 157.4
B 15 33 46171 309.97 770 753 146.5
B 12 111 18024 117.87 770 753 146.5
B 11 111 16145 105.05 770 753 146.5
C 14 238 118110 675.84 743 748 173.7
C 3 233 47270 267.9 743 748 173.7
C 14 176 33779 190.21 743 748 173.7
D 7 80 394140 2156.46 758 740 182.4
D 1 52 140954 768.6 758 740 182.4
D 12 233 32606 174.68 758 740 182.4

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