ASTROSAT CZTI

Data Quality Report

Orbit 26811

Creation date: 2024-06-27T19:33:13.776695
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/AS1A09_079T01_9000003864_26811cztM0_level2.evt modeM0/AS1A09_079T01_9000003864_26811cztM0_level2_quad_clean.evt
Size (bytes)723,009,60095,955,840
Size689.5 MB 91.5 MB
Events in quadrant A4,039,116636,011
Events in quadrant B9,758,214555,682
Events in quadrant C3,137,552642,695
Events in quadrant D4,526,580622,299

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161450
B0332820
C0134170
D0177730

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64211742.709858%
B6421297046.254477%
C64211692.631989%
D64223685.730302%

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 6761 6422 2 2 0.03% 0.03%
B 6761 6422 2548 2548 37.69% 39.68%
C 6761 6422 1 1 0.01% 0.02%
D 6762 6423 195 195 2.88% 3.04%

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 13 1024288 6554.45 776 758 156.2
A 6 16 16221 99.02 776 758 156.2
A 13 254 10397 61.72 776 758 156.2
B 0 189 7280880 62540.54 604 587 116.4
B 10 246 65207 555.11 604 587 116.4
B 3 112 22185 185.54 604 587 116.4
C 14 238 119224 668.04 756 757 177.3
C 3 233 46979 260.64 756 757 177.3
C 15 208 19411 105.19 756 757 177.3
D 7 80 1162959 6472.19 755 736 179.6
D 2 250 381852 2122.36 755 736 179.6
D 1 52 78441 432.72 755 736 179.6

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter