ASTROSAT CZTI

Data Quality Report

Orbit 22825

Creation date: 2024-06-27T18:46:16.562216
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/AS1C05_012T02_9000003372_22825cztM0_level2.evt modeM0/AS1C05_012T02_9000003372_22825cztM0_level2_quad_clean.evt
Size (bytes)473,480,640109,298,880
Size451.5 MB 104.2 MB
Events in quadrant A2,822,009750,608
Events in quadrant B2,857,546767,968
Events in quadrant C2,810,135711,186
Events in quadrant D5,455,511674,445

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01210991
B01218397
C01211983
D020365116

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01202
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5804170.292901%
B5806380.654495%
C5809430.740231%
D58052764.754522%

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 7121 5842 0 0 0.00% 0.00%
B 7122 5844 0 0 0.00% 0.00%
C 7122 5842 4 4 0.06% 0.07%
D 7122 5843 228 228 3.20% 3.90%

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 13 252 13387 88.77 727 714 142.8
A 13 254 10895 71.32 727 714 142.8
A 0 226 6482 40.4 727 714 142.8
B 0 229 26248 189.95 722 708 134.5
B 12 111 15576 110.58 722 708 134.5
B 0 230 15406 109.31 722 708 134.5
C 14 238 112936 716.75 682 685 156.6
C 2 16 29717 185.37 682 685 156.6
C 1 16 4787 26.19 682 685 156.6
D 7 238 2075076 12669.9 682 662 163.7
D 1 52 517551 3157.0 682 662 163.7
D 12 227 251983 1534.99 682 662 163.7

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