ASTROSAT CZTI

Data Quality Report

Orbit 44925

Creation date: 2024-06-27T23:08:03.660197
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/AS1A13_017T02_9000006032_44925cztM0_level2.fits modeM0/AS1A13_017T02_9000006032_44925cztM0_level2_quad_clean.evt
Size (bytes)577,437,120114,361,920
Size550.7 MB 109.1 MB
Events in quadrant A5,963,505771,473
Events in quadrant B4,195,853801,408
Events in quadrant C3,345,716784,544
Events in quadrant D7,348,791636,607

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222672
B0169912
C0143092
D0265856

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67252844.223048%
B67262613.880464%
C6726961.427297%
D6725102515.241636%

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 7780 6727 0 0 0.00% 0.00%
B 7781 6728 49 49 0.63% 0.73%
C 7781 6728 1 1 0.01% 0.01%
D 7780 6727 601 601 7.72% 8.93%

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 10 83 2615902 15323.39 821 802 170.7
A 0 247 99804 580.11 821 802 170.7
A 0 243 52504 302.95 821 802 170.7
B 4 171 338674 2104.28 821 799 160.6
B 0 219 166020 1029.0 821 799 160.6
B 0 183 113689 703.08 821 799 160.6
C 15 208 67172 346.45 820 825 191.5
C 12 2 33051 168.28 820 825 191.5
C 3 233 23107 116.35 820 825 191.5
D 1 52 2365761 12044.77 776 751 196.4
D 1 47 540407 2748.42 776 751 196.4
D 13 171 235153 1193.79 776 751 196.4

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