ASTROSAT CZTI

Data Quality Report

Orbit 31269

Creation date: 2024-06-27T20:25:59.982027
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/AS1T04_021T01_9000004526_31269cztM0_level2.evt modeM0/AS1T04_021T01_9000004526_31269cztM0_level2_quad_clean.evt
Size (bytes)609,494,400106,770,240
Size581.3 MB 101.8 MB
Events in quadrant A3,301,114718,549
Events in quadrant B6,064,545689,366
Events in quadrant C4,496,664673,680
Events in quadrant D4,134,428676,104

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140641
B0227731
C0178881
D0168011

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6823771.128536%
B68223605.277045%
C68223294.822633%
D6823811.187161%

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 7533 6825 0 0 0.00% 0.00%
B 7532 6824 147 147 1.95% 2.15%
C 7532 6824 84 84 1.12% 1.23%
D 7533 6825 21 21 0.28% 0.31%

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 13170 71.93 855 839 171.4
A 3 137 8410 44.17 855 839 171.4
A 0 226 7307 37.73 855 839 171.4
B 6 159 1915897 12095.17 827 806 158.3
B 0 190 468861 2956.1 827 806 158.3
B 5 172 154769 972.39 827 806 158.3
C 3 233 872258 4752.19 794 801 183.4
C 0 10 339818 1848.71 794 801 183.4
C 14 238 139308 755.3 794 801 183.4
D 8 195 781496 3634.26 813 797 214.8
D 2 250 74756 344.29 813 797 214.8
D 12 218 48615 222.6 813 797 214.8

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