ASTROSAT CZTI

Data Quality Report

Orbit 15206

Creation date: 2024-06-27T17:05:16.472332
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/AS1T02_070T01_9000002244_15206cztM0_level2.evt modeM0/AS1T02_070T01_9000002244_15206cztM0_level2_quad_clean.evt
Size (bytes)202,944,96031,176,000
Size193.5 MB 29.7 MB
Events in quadrant A1,395,982187,293
Events in quadrant B1,431,537190,713
Events in quadrant C1,644,373185,364
Events in quadrant D1,480,438178,387

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A058592
B059371
C065511
D062391

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2823531.877435%
B2823521.842012%
C2823511.806589%
D2823662.337938%

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 3598 2833 0 0 0.00% 0.00%
B 3598 2833 0 0 0.00% 0.00%
C 3598 2833 0 0 0.00% 0.00%
D 3598 2833 27 27 0.75% 0.95%

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 12 189 31597 423.25 354 345 73.8
A 0 226 3215 38.87 354 345 73.8
A 12 194 2529 29.58 354 345 73.8
B 0 189 20930 291.7 352 343 70.6
B 0 214 14133 195.4 352 343 70.6
B 12 111 8177 111.0 352 343 70.6
C 3 233 316158 3929.29 340 341 80.4
C 7 247 3082 34.1 340 341 80.4
C 13 61 2414 25.79 340 341 80.4
D 2 33 157836 1847.66 342 331 85.2
D 2 234 10673 121.32 342 331 85.2
D 13 249 9543 108.06 342 331 85.2

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