ASTROSAT CZTI

Data Quality Report

Orbit 19449

Creation date: 2024-06-27T18:03:01.652057
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_221T01_9000002888_19449cztM0_level2.evt modeM0/AS1A05_221T01_9000002888_19449cztM0_level2_quad_clean.evt
Size (bytes)565,496,64076,354,560
Size539.3 MB 72.8 MB
Events in quadrant A3,553,450461,205
Events in quadrant B3,729,384467,366
Events in quadrant C3,769,232451,417
Events in quadrant D5,578,953423,536

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01524
B01524
C01526
D01526

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143
B0142
C0142
D0132

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015233311
B015752310
C016014382
D021877384

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7314200.273448%
B7311590.807003%
C7301771.054650%
D72984526.193478%

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 8315 7369 1 1 0.01% 0.01%
B 8317 7358 11 11 0.13% 0.15%
C 8309 7358 10 10 0.12% 0.14%
D 8315 7357 391 391 4.70% 5.31%

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 11 29 44533 238.12 902 881 183.3
A 3 1 14216 72.74 902 881 183.3
A 12 96 13676 69.8 902 881 183.3
B 7 220 64905 369.44 896 871 173.3
B 0 197 55122 313.0 896 871 173.3
B 0 198 25712 143.32 896 871 173.3
C 9 221 164786 806.73 861 867 203.2
C 14 238 132940 650.0 861 867 203.2
C 0 207 105933 517.09 861 867 203.2
D 7 238 1577166 7451.38 861 835 211.5
D 1 52 433522 2045.33 861 835 211.5
D 5 222 130424 612.57 861 835 211.5

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