ASTROSAT CZTI

Data Quality Report

Orbit 18145

Creation date: 2024-06-27T17:45:41.467472
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_082T08_9000002698_18145cztM0_level2.evt modeM0/AS1A05_082T08_9000002698_18145cztM0_level2_quad_clean.evt
Size (bytes)907,715,520138,985,920
Size865.7 MB 132.5 MB
Events in quadrant A5,687,876869,508
Events in quadrant B5,603,404885,870
Events in quadrant C5,568,113857,771
Events in quadrant D9,851,383798,596

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248282
B0242912
C0243562
D0371192

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02360
B02360
C02360
D02360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A115161261.094130%
B115161191.033345%
C115161191.033345%
D11516130211.306009%

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 13101 11518 31 31 0.24% 0.27%
B 13101 11518 16 16 0.12% 0.14%
C 13101 11518 2 2 0.02% 0.02%
D 13101 11517 1072 1072 8.18% 9.31%

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 15 174 449792 1624.68 1362 1334 276.0
A 0 226 11714 37.6 1362 1334 276.0
A 3 137 10306 32.5 1362 1334 276.0
B 4 171 91773 347.42 1361 1325 260.3
B 7 220 77137 291.2 1361 1325 260.3
B 3 64 45709 170.48 1361 1325 260.3
C 0 207 214013 693.19 1302 1309 306.8
C 14 238 201183 651.38 1302 1309 306.8
C 3 233 67216 214.79 1302 1309 306.8
D 11 176 2139151 6924.85 1265 1230 308.7
D 12 110 1836306 5943.92 1265 1230 308.7
D 7 238 393404 1270.27 1265 1230 308.7

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