ASTROSAT CZTI

Data Quality Report

Orbit 36457

Creation date: 2022-06-26T09:54:11.054916
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/AS1A11_003T08_9000005202_36457cztM0_level2.evt modeM0/AS1A11_003T08_9000005202_36457cztM0_level2_quad_clean.evt
Size (bytes)778,775,040117,432,000
Size742.7 MB 112.0 MB
Events in quadrant A5,250,508718,136
Events in quadrant B6,395,859706,486
Events in quadrant C5,692,646699,899
Events in quadrant D5,510,740679,463

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223194
B0260303
C0232403
D0239463

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10862250.230160%
B108622402.209538%
C10862750.690481%
D10862890.819370%

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 14919 10865 6 6 0.04% 0.06%
B 14919 10865 146 146 0.98% 1.34%
C 14919 10865 56 56 0.38% 0.52%
D 14919 10865 61 61 0.41% 0.56%

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 10 83 338801 1338.08 1251 1225 252.3
A 9 143 24331 91.59 1251 1225 252.3
A 7 192 19673 73.12 1251 1225 252.3
B 5 172 863147 3632.51 1230 1196 237.3
B 5 255 224064 939.23 1230 1196 237.3
B 0 189 189374 793.04 1230 1196 237.3
C 15 214 501613 1789.66 1201 1208 279.6
C 0 10 323944 1154.24 1201 1208 279.6
C 0 207 125464 444.39 1201 1208 279.6
D 13 171 215234 727.75 1207 1172 294.1
D 10 199 176041 594.5 1207 1172 294.1
D 2 250 138349 466.36 1207 1172 294.1

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