ASTROSAT CZTI

Data Quality Report

Orbit 02489

Creation date: 2024-06-27T14:18:35.211891
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/AS1T01_046T01_9000000372_02489cztM0_level2.evt modeM0/AS1T01_046T01_9000000372_02489cztM0_level2_quad_clean.evt
Size (bytes)651,139,200135,521,280
Size621.0 MB 129.2 MB
Events in quadrant A4,712,842840,600
Events in quadrant B4,825,821864,901
Events in quadrant C4,697,897848,406
Events in quadrant D4,766,596819,177

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215123
B0216672
C0217732
D0222862

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10559460.435647%
B10559500.473530%
C10559580.549294%
D10559480.454589%

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 13035 10561 9 9 0.07% 0.09%
B 13034 10560 2 2 0.02% 0.02%
C 13034 10560 23 23 0.18% 0.22%
D 13034 10560 28 28 0.21% 0.27%

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 0 199 38053 151.29 1210 1185 243.7
A 0 226 16790 64.04 1210 1185 243.7
A 12 194 13704 51.37 1210 1185 243.7
B 5 6 46158 195.55 1223 1193 229.9
B 5 172 29588 123.49 1223 1193 229.9
B 4 200 17653 71.58 1223 1193 229.9
C 10 65 113185 420.52 1160 1166 266.4
C 0 207 18782 66.13 1160 1166 266.4
C 12 4 17176 60.1 1160 1166 266.4
D 7 67 162785 594.59 1154 1127 271.9
D 2 14 89336 324.44 1154 1127 271.9
D 10 102 53894 194.08 1154 1127 271.9

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