ASTROSAT CZTI

Data Quality Report

Orbit 18427

Creation date: 2024-06-27T17:49:41.769557
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/AS1A05_199T01_9000002732_18427cztM0_level2.evt modeM0/AS1A05_199T01_9000002732_18427cztM0_level2_quad_clean.evt
Size (bytes)442,111,68099,385,920
Size421.6 MB 94.8 MB
Events in quadrant A3,138,345640,230
Events in quadrant B3,276,246663,394
Events in quadrant C3,192,859631,191
Events in quadrant D3,330,577612,269

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136642
B0139482
C0137652
D0145182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6635160.241145%
B6635520.783723%
C6635721.085154%
D6635220.331575%

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 7890 6636 1 1 0.01% 0.02%
B 7890 6636 4 4 0.05% 0.06%
C 7890 6636 0 0 0.00% 0.00%
D 7890 6636 13 13 0.16% 0.20%

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 0 226 7128 38.98 814 799 162.4
A 0 254 6920 37.7 814 799 162.4
A 3 137 6028 32.2 814 799 162.4
B 4 173 33592 211.2 822 802 155.3
B 0 189 25297 157.77 822 802 155.3
B 12 111 18098 111.4 822 802 155.3
C 14 238 125138 682.26 781 786 182.3
C 3 233 18904 99.4 781 786 182.3
C 13 61 5649 26.68 781 786 182.3
D 1 52 134885 703.11 785 762 190.8
D 13 168 87413 454.25 785 762 190.8
D 12 110 58619 303.3 785 762 190.8

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