ASTROSAT CZTI

Data Quality Report

Orbit 28234

Creation date: 2024-06-27T19:49:28.345112
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/AS1C05_019T04_9000004074_28234cztM0_level2.evt modeM0/AS1C05_019T04_9000004074_28234cztM0_level2_quad_clean.evt
Size (bytes)913,953,600179,144,640
Size871.6 MB 170.8 MB
Events in quadrant A5,683,5211,172,749
Events in quadrant B6,078,0401,190,099
Events in quadrant C6,444,3861,124,981
Events in quadrant D8,631,6171,077,832

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0251920
B0261180
C0268990
D0342310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12443910.731335%
B124431261.012618%
C124431841.478743%
D124427526.044044%

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 13793 12443 1 1 0.01% 0.01%
B 13793 12443 22 22 0.16% 0.18%
C 13793 12443 2 2 0.01% 0.02%
D 13792 12442 533 533 3.86% 4.28%

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 6 16 29275 94.54 1463 1431 294.5
A 13 254 20075 63.3 1463 1431 294.5
A 3 137 14713 45.1 1463 1431 294.5
B 10 245 218371 780.97 1445 1404 277.8
B 10 246 76132 268.98 1445 1404 277.8
B 4 200 64178 225.95 1445 1404 277.8
C 3 233 774776 2361.4 1397 1403 327.5
C 14 238 226000 685.78 1397 1403 327.5
C 13 61 9400 24.42 1397 1403 327.5
D 1 52 2537139 7689.16 1382 1345 329.8
D 5 222 271490 819.15 1382 1345 329.8
D 8 195 233588 704.22 1382 1345 329.8

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