ASTROSAT CZTI

Data Quality Report

Orbit 07888

Creation date: 2024-06-27T15:25:14.223575
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/AS1A02_071T01_9000001078_07888cztM0_level2.evt modeM0/AS1A02_071T01_9000001078_07888cztM0_level2_quad_clean.evt
Size (bytes)459,927,360100,607,040
Size438.6 MB 95.9 MB
Events in quadrant A3,488,148648,512
Events in quadrant B3,334,407679,049
Events in quadrant C3,536,459662,673
Events in quadrant D3,148,213623,420

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144423
B0138582
C0144722
D0135792

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62091572.528588%
B62091342.158158%
C6209470.756966%
D6209480.773071%

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 7509 6210 108 108 1.44% 1.74%
B 7509 6210 41 41 0.55% 0.66%
C 7509 6210 10 10 0.13% 0.16%
D 7509 6210 35 35 0.47% 0.56%

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 15 239 569526 3724.68 756 740 152.7
A 0 226 6921 40.48 756 740 152.7
A 12 194 6445 37.36 756 740 152.7
B 11 51 124662 857.15 776 760 144.6
B 4 239 88004 603.55 776 760 144.6
B 4 80 42669 289.93 776 760 144.6
C 1 16 573376 3258.83 759 764 175.7
C 13 61 5713 28.17 759 764 175.7
C 12 4 3484 15.48 759 764 175.7
D 13 104 98530 538.15 744 723 181.7
D 12 233 95417 521.02 744 723 181.7
D 1 20 47500 257.37 744 723 181.7

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