ASTROSAT CZTI

Data Quality Report

Orbit 24406

Creation date: 2024-06-27T19:05:40.709264
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_001T02_9000003600_24406cztM0_level2.evt modeM0/AS1A07_001T02_9000003600_24406cztM0_level2_quad_clean.evt
Size (bytes)473,149,44096,390,720
Size451.2 MB 91.9 MB
Events in quadrant A3,083,087630,088
Events in quadrant B3,212,798644,087
Events in quadrant C3,235,905612,884
Events in quadrant D4,360,502583,198

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131772
B0134552
C0133582
D0172192

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6436250.388440%
B6436640.994406%
C6436741.149782%
D64362914.521442%

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 7596 6437 0 0 0.00% 0.00%
B 7596 6437 10 10 0.13% 0.16%
C 7596 6437 2 2 0.03% 0.03%
D 7596 6437 212 212 2.79% 3.29%

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 11051 63.93 799 782 160.6
A 0 226 6831 37.66 799 782 160.6
A 3 137 6830 37.65 799 782 160.6
B 10 247 33860 222.37 800 780 148.8
B 12 17 23751 154.42 800 780 148.8
B 12 111 17501 112.4 800 780 148.8
C 14 238 126396 714.66 770 776 175.8
C 7 247 56374 316.3 770 776 175.8
C 2 16 45201 252.73 770 776 175.8
D 1 52 1377125 7467.07 766 742 184.3
D 8 195 27743 146.48 766 742 184.3
D 2 234 26127 137.72 766 742 184.3

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