ASTROSAT CZTI

Data Quality Report

Orbit 30550

Creation date: 2024-06-27T20:16:50.128719
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/AS1A10_055T01_9000004400_30550cztM0_level2.evt modeM0/AS1A10_055T01_9000004400_30550cztM0_level2_quad_clean.evt
Size (bytes)199,560,96036,604,800
Size190.3 MB 34.9 MB
Events in quadrant A1,189,049243,316
Events in quadrant B1,887,724240,643
Events in quadrant C1,387,980223,777
Events in quadrant D1,413,046226,719

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050211
B073902
C055231
D058061

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2415421.739130%
B2414753.106877%
C24141204.971002%
D2414672.775476%

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 3110 2416 0 0 0.00% 0.00%
B 3109 2415 3 3 0.10% 0.12%
C 3109 2415 41 41 1.32% 1.70%
D 3109 2415 28 28 0.90% 1.16%

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 8 192 13101 204.88 304 297 62.5
A 13 254 4251 63.27 304 297 62.5
A 3 137 3106 44.95 304 297 62.5
B 6 159 662008 11021.69 302 294 60.0
B 4 171 25227 415.29 302 294 60.0
B 15 36 7628 122.16 302 294 60.0
C 0 10 156548 2289.59 284 285 68.2
C 3 233 73688 1075.51 284 285 68.2
C 14 238 45715 665.65 284 285 68.2
D 1 52 239413 3363.12 290 282 71.1
D 13 249 33468 466.73 290 282 71.1
D 8 195 17827 246.75 290 282 71.1

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