ASTROSAT CZTI

Data Quality Report

Orbit 03761

Creation date: 2024-06-27T14:33:20.013432
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/AS1G05_248T01_9000000486_03761cztM0_level2.evt modeM0/AS1G05_248T01_9000000486_03761cztM0_level2_quad_clean.evt
Size (bytes)679,550,40053,709,120
Size648.1 MB 51.2 MB
Events in quadrant A3,581,575322,858
Events in quadrant B4,072,861322,262
Events in quadrant C3,007,372319,919
Events in quadrant D9,474,142201,860

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149363
B0164912
C0134292
D0325822

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65671091.659814%
B65671091.659814%
C6567320.487285%
D6568210632.064555%

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 7757 6567 35 35 0.45% 0.53%
B 7757 6567 14 14 0.18% 0.21%
C 7757 6568 0 0 0.00% 0.00%
D 7758 6568 2068 2068 26.66% 31.49%

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 0 118 228470 1396.39 796 779 163.1
A 13 251 123786 754.38 796 779 163.1
A 3 1 71307 432.54 796 779 163.1
B 15 204 652173 4218.65 808 788 154.4
B 5 70 146288 942.32 808 788 154.4
B 5 200 36433 230.85 808 788 154.4
C 13 61 6775 33.62 768 772 178.5
C 2 53 4005 18.11 768 772 178.5
C 14 67 2446 9.38 768 772 178.5
D 12 79 5544783 33469.39 653 636 165.6
D 1 20 1206551 7279.97 653 636 165.6
D 13 239 104490 626.95 653 636 165.6

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
Veto Counter