ASTROSAT CZTI

Data Quality Report

Orbit 20673

Creation date: 2024-06-27T18:18:13.481756
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/AS1A05_229T02_9000003060_20673cztM0_level2.evt modeM0/AS1A05_229T02_9000003060_20673cztM0_level2_quad_clean.evt
Size (bytes)233,490,24046,376,640
Size222.7 MB 44.2 MB
Events in quadrant A1,608,983299,281
Events in quadrant B1,617,992303,140
Events in quadrant C1,666,183289,234
Events in quadrant D1,950,601276,705

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A091102236
B089792106
C091832142
D0106502587

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09024
B09222
C09125
D08717

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A064
B054
C043
D054

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3308120.362757%
B331950.150648%
C3319200.602591%
D33091123.384708%

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 5333 3416 4 4 0.08% 0.12%
B 5328 3410 2 2 0.04% 0.06%
C 5346 3406 0 0 0.00% 0.00%
D 5314 3405 60 60 1.13% 1.76%

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 9 143 43546 523.06 404 395 82.5
A 5 16 10077 117.36 404 395 82.5
A 0 226 3445 36.97 404 395 82.5
B 0 190 13782 168.33 404 394 79.5
B 0 197 11341 137.64 404 394 79.5
B 12 111 9374 112.91 404 394 79.5
C 14 238 59837 649.27 385 388 91.6
C 3 233 50337 545.51 385 388 91.6
C 8 208 47417 513.62 385 388 91.6
D 1 52 380652 4004.49 383 370 95.0
D 13 153 68142 713.66 383 370 95.0
D 7 38 19671 203.25 383 370 95.0

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