ASTROSAT CZTI

Data Quality Report

Orbit 09840

Creation date: 2024-06-27T15:51:14.682651
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/AS1G07_020T01_9000001398_09840cztM0_level2.evt modeM0/AS1G07_020T01_9000001398_09840cztM0_level2_quad_clean.evt
Size (bytes)407,456,64083,816,640
Size388.6 MB 79.9 MB
Events in quadrant A2,844,498538,881
Events in quadrant B3,116,031547,046
Events in quadrant C2,759,469537,621
Events in quadrant D3,217,629502,028

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013189742
B013961879
C012990772
D0146131062

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012711
B012715
C01284
D01286

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211
B0210
C0210
D0221

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5948540.907868%
B5889831.409407%
C5922190.320838%
D5860741.262799%

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 7559 6207 16 16 0.21% 0.26%
B 7559 6183 20 20 0.26% 0.32%
C 7559 6227 1 1 0.01% 0.02%
D 7559 6184 78 78 1.03% 1.26%

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 4 2 60508 407.17 720 705 146.9
A 14 111 9069 56.95 720 705 146.9
A 0 226 6821 41.64 720 705 146.9
B 4 81 145856 1054.56 723 707 137.6
B 4 239 53578 384.13 723 707 137.6
B 0 229 34912 248.51 723 707 137.6
C 14 234 34990 213.4 695 699 160.7
C 12 4 7034 39.42 695 699 160.7
C 13 61 5235 28.23 695 699 160.7
D 12 233 294915 1697.91 675 656 173.3
D 1 52 124998 717.47 675 656 173.3
D 7 71 54453 310.42 675 656 173.3

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