ASTROSAT CZTI

Data Quality Report

Orbit 51049

Creation date: 2025-03-06T21:05:57.862392
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/AS1C07_001T02_9000006452_51049cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_51049cztM0_level2_quad_clean.evt
Size (bytes)785,214,72097,724,160
Size748.8 MB 93.2 MB
Events in quadrant A7,848,678638,339
Events in quadrant B8,655,441613,237
Events in quadrant C6,723,864612,083
Events in quadrant D5,272,923585,562

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0284100
B0308080
C0250480
D0206930

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A731673410.032805%
B7317159721.825885%
C73176599.006423%
D73173935.371054%

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 7316 7316 583 583 7.97% 7.97%
B 7317 7317 1150 1150 15.72% 15.72%
C 7317 7317 591 591 8.08% 8.08%
D 7316 7316 383 383 5.24% 5.24%

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 10 253 2103604 11332.91 748 731 185.6
A 12 3 1025998 5525.42 748 731 185.6
A 12 80 463265 2492.71 748 731 185.6
B 10 44 1737420 11615.76 704 679 149.5
B 12 32 1596003 10669.92 704 679 149.5
B 4 171 883434 5904.09 704 679 149.5
C 12 249 2519752 12685.83 723 717 198.6
C 4 12 353838 1778.31 723 717 198.6
C 15 158 220976 1109.22 723 717 198.6
D 10 172 471747 2318.63 723 698 203.2
D 8 176 460564 2263.58 723 698 203.2
D 3 12 233249 1144.68 723 698 203.2

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