ASTROSAT CZTI

Data Quality Report

Orbit 44999

Creation date: 2024-06-27T23:08:53.753460
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_020T01_9000006040_44999cztM0_level2.fits modeM0/AS1A13_020T01_9000006040_44999cztM0_level2_quad_clean.evt
Size (bytes)588,948,480113,667,840
Size561.7 MB 108.4 MB
Events in quadrant A6,386,126754,096
Events in quadrant B4,220,079783,450
Events in quadrant C3,380,946777,779
Events in quadrant D7,258,767627,259

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242333
B0173936
C0151594
D0265073

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71634205.863465%
B71622974.146886%
C7162811.130969%
D716299813.934655%

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 7673 7165 41 41 0.53% 0.57%
B 7673 7165 52 52 0.68% 0.73%
C 7672 7164 10 10 0.13% 0.14%
D 7672 7164 672 672 8.76% 9.38%

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 2810543 16351.86 824 807 171.8
A 2 79 132977 769.19 824 807 171.8
A 1 251 114448 661.36 824 807 171.8
B 5 255 217652 1331.82 825 800 162.8
B 15 36 118706 724.13 825 800 162.8
B 0 155 111684 681.01 825 800 162.8
C 14 254 52468 268.68 816 821 192.2
C 15 208 40673 207.32 816 821 192.2
C 3 233 39196 199.63 816 821 192.2
D 11 241 1239043 6380.99 769 746 194.1
D 1 52 1131179 5825.16 769 746 194.1
D 13 249 491195 2527.3 769 746 194.1

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