ASTROSAT CZTI

Data Quality Report

Orbit 24501

Creation date: 2024-06-27T19:06:38.336790
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_183T01_9000003606_24501cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24501cztM0_level2_quad_clean.evt
Size (bytes)980,369,280192,294,720
Size935.0 MB 183.4 MB
Events in quadrant A7,348,6681,289,092
Events in quadrant B9,465,5341,233,493
Events in quadrant C5,381,1471,276,896
Events in quadrant D6,732,0781,242,696

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0297972
B0356332
C0235742
D0273722

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02280
B02280
C02280
D02280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A112915675.021699%
B11292170015.054906%
C112921831.620616%
D112922312.045696%

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 13231 11292 159 159 1.20% 1.41%
B 13232 11294 773 773 5.84% 6.84%
C 13232 11293 1 1 0.01% 0.01%
D 13232 11294 136 136 1.03% 1.20%

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 14 111 1814820 6637.45 1366 1338 273.2
A 4 2 271131 987.46 1366 1338 273.2
A 13 254 17807 60.28 1366 1338 273.2
B 3 64 4351004 18169.68 1289 1260 239.4
B 12 111 29308 117.16 1289 1260 239.4
B 0 190 27816 110.93 1289 1260 239.4
C 14 238 212336 697.33 1314 1321 302.6
C 2 16 32383 102.65 1314 1321 302.6
C 7 247 14614 43.93 1314 1321 302.6
D 1 52 904714 2814.75 1333 1294 321.0
D 12 218 400936 1245.15 1333 1294 321.0
D 8 195 249046 771.91 1333 1294 321.0

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