ASTROSAT CZTI

Data Quality Report

Orbit 01186

Creation date: 2024-06-27T14:08:49.974183
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/AS1G04_007T02_9000000220_01186cztM0_level2.evt modeM0/AS1G04_007T02_9000000220_01186cztM0_level2_quad_clean.evt
Size (bytes)1,278,705,60078,989,760
Size1.2 GB 75.3 MB
Events in quadrant A7,031,648594,439
Events in quadrant B7,735,567596,653
Events in quadrant C6,470,410569,090
Events in quadrant D17,117,939237,576

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248502
B0269181
C0232031
D0557331

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A559060.107335%
B5590480.858676%
C559030.053667%
D5590555599.373882%

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 6870 5591 224 224 3.26% 4.01%
B 6870 5591 560 560 8.15% 10.02%
C 6870 5591 125 125 1.82% 2.24%
D 6870 5591 5557 5557 80.89% 99.39%

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 15 127 448830 1104.12 1704 1718 404.9
A 8 14 33328 78.06 1704 1718 404.9
A 11 79 7704 14.78 1704 1718 404.9
B 5 191 885777 2142.55 1756 1766 412.6
B 6 53 94386 224.48 1756 1766 412.6
B 4 187 24713 55.62 1756 1766 412.6
C 15 241 332524 767.76 1555 1601 431.0
C 3 111 19232 40.9 1555 1601 431.0
C 9 83 18634 39.52 1555 1601 431.0
D 1 239 13360663 51742.77 842 869 258.2
D 10 84 557939 2157.54 842 869 258.2
D 10 125 25029 93.57 842 869 258.2

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