ASTROSAT CZTI

Data Quality Report

Orbit 25189

Creation date: 2024-06-27T19:14:53.001075
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_027T01_9000003690_25189cztM0_level2.evt modeM0/AS1A07_027T01_9000003690_25189cztM0_level2_quad_clean.evt
Size (bytes)539,550,72087,854,400
Size514.6 MB 83.8 MB
Events in quadrant A3,285,509558,894
Events in quadrant B3,441,727564,244
Events in quadrant C4,535,767530,343
Events in quadrant D4,612,210528,910

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140540
B0144510
C0183650
D0181590

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6859400.583175%
B6859771.122613%
C68591311.909899%
D68581622.362205%

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 7604 6860 0 0 0.00% 0.00%
B 7604 6860 6 6 0.08% 0.09%
C 7604 6860 0 0 0.00% 0.00%
D 7603 6859 87 87 1.14% 1.27%

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 11672 64.12 850 833 169.0
A 15 174 8559 45.7 850 833 169.0
A 3 137 7815 41.3 850 833 169.0
B 3 64 90928 566.11 842 822 159.2
B 0 189 28010 170.82 842 822 159.2
B 12 111 19591 117.92 842 822 159.2
C 7 247 1245708 6666.25 806 812 186.7
C 14 238 131934 702.14 806 812 186.7
C 3 233 5610 25.69 806 812 186.7
D 12 235 455478 2340.14 816 794 194.3
D 8 195 453164 2328.23 816 794 194.3
D 1 255 429525 2206.57 816 794 194.3

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