ASTROSAT CZTI

Data Quality Report

Orbit 21648

Creation date: 2024-06-27T18:30:38.212017
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/AS1A06_002T02_9000003206_21648cztM0_level2.evt modeM0/AS1A06_002T02_9000003206_21648cztM0_level2_quad_clean.evt
Size (bytes)451,123,20090,875,520
Size430.2 MB 86.7 MB
Events in quadrant A3,032,803580,935
Events in quadrant B3,330,185589,851
Events in quadrant C3,103,432568,672
Events in quadrant D3,745,438550,431

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134761
B0141371
C0135291
D0154721

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6621240.362483%
B6622540.815464%
C6622620.936273%
D6622871.313802%

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 7486 6622 0 0 0.00% 0.00%
B 7487 6623 15 15 0.20% 0.23%
C 7487 6623 1 1 0.01% 0.02%
D 7487 6623 48 48 0.64% 0.72%

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 13 254 9020 51.97 786 768 158.8
A 0 226 6859 38.36 786 768 158.8
A 3 137 6685 37.26 786 768 158.8
B 3 64 96123 630.8 786 765 151.2
B 0 229 54849 357.77 786 765 151.2
B 0 245 24724 158.49 786 765 151.2
C 14 238 119280 659.32 762 765 179.8
C 0 207 9029 45.97 762 765 179.8
C 10 22 7334 36.54 762 765 179.8
D 7 238 414665 2227.04 765 743 185.9
D 9 68 86926 463.69 765 743 185.9
D 13 104 74345 396.0 765 743 185.9

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