ASTROSAT CZTI

Data Quality Report

Orbit 07208

Creation date: 2024-06-27T15:16:56.854688
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/AS1G06_083T01_9000000984_07208cztM0_level2.evt modeM0/AS1G06_083T01_9000000984_07208cztM0_level2_quad_clean.evt
Size (bytes)472,176,000111,303,360
Size450.3 MB 106.1 MB
Events in quadrant A3,045,141732,368
Events in quadrant B3,470,624759,965
Events in quadrant C3,421,390735,063
Events in quadrant D3,922,278691,447

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133413
B0146202
C0144082
D0160072

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6484220.339297%
B6484701.079581%
C64841051.619371%
D64841592.452190%

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 7814 6485 2 2 0.03% 0.03%
B 7814 6485 22 22 0.28% 0.34%
C 7814 6485 94 94 1.20% 1.45%
D 7814 6485 83 83 1.06% 1.28%

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 13 248 25541 158.73 776 759 156.1
A 3 1 24194 150.1 776 759 156.1
A 0 226 7228 41.43 776 759 156.1
B 0 214 98207 667.15 792 774 146.0
B 4 173 86135 584.49 792 774 146.0
B 0 228 55106 372.03 792 774 146.0
C 9 243 301932 1709.63 772 776 176.2
C 9 68 97280 547.84 772 776 176.2
C 13 61 6021 29.78 772 776 176.2
D 2 216 668436 3640.24 757 736 183.4
D 8 195 221900 1205.77 757 736 183.4
D 14 34 77469 418.34 757 736 183.4

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