ASTROSAT CZTI

Data Quality Report

Orbit 05469

Creation date: 2024-06-27T14:55:34.466886
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/AS1T01_138T01_9000000698_05469cztM0_level2.evt modeM0/AS1T01_138T01_9000000698_05469cztM0_level2_quad_clean.evt
Size (bytes)472,590,72079,655,040
Size450.7 MB 76.0 MB
Events in quadrant A3,170,326500,762
Events in quadrant B3,505,980503,026
Events in quadrant C2,875,519497,218
Events in quadrant D4,327,271465,653

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138313
B0146152
C0131342
D0171302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6381921.441780%
B6381260.407460%
C6381180.282087%
D63812113.306692%

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 7571 6382 27 27 0.36% 0.42%
B 7571 6382 2 2 0.03% 0.03%
C 7571 6382 0 0 0.00% 0.00%
D 7571 6382 179 179 2.36% 2.80%

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 0 50 149356 954.13 762 747 155.8
A 14 111 44435 280.49 762 747 155.8
A 0 247 26338 164.3 762 747 155.8
B 15 204 422476 2880.85 765 748 146.4
B 11 51 25042 165.95 765 748 146.4
B 0 199 15547 101.09 765 748 146.4
C 1 16 24354 140.41 728 734 168.2
C 9 247 7419 39.74 728 734 168.2
C 13 61 5996 31.28 728 734 168.2
D 2 33 1166329 6579.67 723 701 177.2
D 8 195 91663 513.46 723 701 177.2
D 2 136 81530 456.26 723 701 177.2

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