ASTROSAT CZTI

Data Quality Report

Orbit 16142

Creation date: 2024-06-27T17:18:36.123526
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/AS1T02_092T01_9000002384_16142cztM0_level2.evt modeM0/AS1T02_092T01_9000002384_16142cztM0_level2_quad_clean.evt
Size (bytes)591,891,84097,272,000
Size564.5 MB 92.8 MB
Events in quadrant A4,050,131644,446
Events in quadrant B3,891,085637,662
Events in quadrant C3,682,241609,325
Events in quadrant D5,824,326563,091

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166703
B0161572
C0154952
D0220482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70462052.909452%
B7046881.248936%
C7046871.234743%
D704682911.765541%

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 7632 7048 152 152 1.99% 2.16%
B 7632 7048 41 41 0.54% 0.58%
C 7632 7048 12 12 0.16% 0.17%
D 7632 7048 685 685 8.98% 9.72%

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 15 174 766487 4511.45 846 829 169.7
A 15 239 9307 49.95 846 829 169.7
A 0 226 7610 39.96 846 829 169.7
B 7 220 151069 925.06 849 831 162.4
B 0 189 138637 848.51 849 831 162.4
B 5 65 108407 662.38 849 831 162.4
C 3 233 308857 1611.19 813 818 191.2
C 14 238 124361 646.19 813 818 191.2
C 0 207 60995 314.75 813 818 191.2
D 1 52 1540715 7304.5 782 766 210.8
D 7 38 1075150 5096.17 782 766 210.8
D 10 70 97490 458.79 782 766 210.8

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