ASTROSAT CZTI

Data Quality Report

Orbit 15572

Creation date: 2024-06-27T17:10:21.481899
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/AS1A04_198T01_9000002308_15572cztM0_level2.evt modeM0/AS1A04_198T01_9000002308_15572cztM0_level2_quad_clean.evt
Size (bytes)499,697,28096,143,040
Size476.5 MB 91.7 MB
Events in quadrant A3,092,639619,771
Events in quadrant B3,273,094634,599
Events in quadrant C3,215,626621,008
Events in quadrant D5,126,706598,735

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131243
B0135592
C0133802
D0193572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6275190.302789%
B6275220.350598%
C6275520.828685%
D62753155.019920%

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 7551 6277 0 0 0.00% 0.00%
B 7551 6276 0 0 0.00% 0.00%
C 7551 6277 0 0 0.00% 0.00%
D 7551 6277 311 311 4.12% 4.95%

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 14 238 22109 134.38 796 780 158.7
A 0 226 7068 39.62 796 780 158.7
A 12 194 6053 33.22 796 780 158.7
B 0 214 47208 310.01 797 779 149.8
B 5 65 34886 227.73 797 779 149.8
B 0 189 32781 213.68 797 779 149.8
C 14 238 122066 666.22 784 791 182.0
C 3 233 27765 148.18 784 791 182.0
C 0 207 6285 30.18 784 791 182.0
D 5 222 2041347 10757.2 782 760 189.7
D 2 16 37299 192.62 782 760 189.7
D 15 0 25825 132.13 782 760 189.7

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