ASTROSAT CZTI

Data Quality Report

Orbit 24621

Creation date: 2024-06-27T19:08:00.531942
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_189T01_9000003614_24621cztM0_level2.evt modeM0/AS1T03_189T01_9000003614_24621cztM0_level2_quad_clean.evt
Size (bytes)514,080,000103,841,280
Size490.3 MB 99.0 MB
Events in quadrant A3,645,639693,550
Events in quadrant B3,665,488696,226
Events in quadrant C3,881,952656,457
Events in quadrant D3,943,234653,421

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150742
B0149972
C0157362
D0160233

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63801342.100313%
B63801412.210031%
C63802293.589342%
D63791011.583320%

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 7690 6380 0 0 0.00% 0.00%
B 7690 6380 0 0 0.00% 0.00%
C 7690 6380 5 5 0.07% 0.08%
D 7689 6379 4 4 0.05% 0.06%

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 13 254 9421 46.02 945 930 184.5
A 0 226 8125 39.0 945 930 184.5
A 3 137 7724 36.83 945 930 184.5
B 3 64 30711 174.41 923 903 170.9
B 12 111 20060 112.09 923 903 170.9
B 7 202 18473 102.81 923 903 170.9
C 7 247 191350 936.9 888 898 203.3
C 14 238 145800 712.82 888 898 203.3
C 3 233 51291 247.9 888 898 203.3
D 1 52 299980 1369.61 917 894 218.4
D 8 195 135269 615.35 917 894 218.4
D 10 70 32796 146.09 917 894 218.4

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