ASTROSAT CZTI

Data Quality Report

Orbit 16543

Creation date: 2024-06-27T17:24:10.825060
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/AS1T03_018T01_9000002442_16543cztM0_level2.evt modeM0/AS1T03_018T01_9000002442_16543cztM0_level2_quad_clean.evt
Size (bytes)500,287,68090,313,920
Size477.1 MB 86.1 MB
Events in quadrant A3,166,855585,440
Events in quadrant B4,251,606588,281
Events in quadrant C4,048,929574,015
Events in quadrant D3,264,492555,648

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132163
B0165682
C0162192
D0136082

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6181360.582430%
B61813265.274227%
C61811442.329720%
D6181651.051610%

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 7472 6183 2 2 0.03% 0.03%
B 7472 6182 275 275 3.68% 4.45%
C 7472 6182 26 26 0.35% 0.42%
D 7472 6182 44 44 0.59% 0.71%

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 15 174 60579 373.01 793 779 160.3
A 3 1 43864 268.75 793 779 160.3
A 15 223 11415 66.34 793 779 160.3
B 10 16 627152 4232.01 790 773 148.0
B 15 35 169734 1141.55 790 773 148.0
B 0 229 143028 961.12 790 773 148.0
C 3 233 963003 5461.43 760 768 176.2
C 14 238 119318 672.86 760 768 176.2
C 7 247 6273 31.24 760 768 176.2
D 1 52 262048 1420.27 758 740 184.0
D 10 70 101023 545.06 758 740 184.0
D 2 234 21598 113.37 758 740 184.0

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