ASTROSAT CZTI

Data Quality Report

Orbit 44276

Creation date: 2024-06-27T23:01:16.533390
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/AS1A13_077T01_9000005984_44276cztM0_level2.fits modeM0/AS1A13_077T01_9000005984_44276cztM0_level2_quad_clean.evt
Size (bytes)676,100,160140,135,040
Size644.8 MB 133.6 MB
Events in quadrant A9,220,906865,839
Events in quadrant B4,544,294982,388
Events in quadrant C4,884,698938,355
Events in quadrant D5,697,709847,584

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0339601
B0195631
C0206431
D0231901

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8766125014.259640%
B87661912.178873%
C87671101.254705%
D87673273.729896%

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 8781 8767 573 573 6.53% 6.54%
B 8781 8767 28 28 0.32% 0.32%
C 8782 8768 41 41 0.47% 0.47%
D 8782 8768 221 221 2.52% 2.52%

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 15 223 2933247 14319.78 984 963 204.8
A 10 83 1745550 8519.68 984 963 204.8
A 13 248 543904 2651.45 984 963 204.8
B 0 190 131459 630.09 1033 1000 207.0
B 4 158 97740 467.24 1033 1000 207.0
B 0 155 52000 246.32 1033 1000 207.0
C 3 233 628615 2588.49 1010 1014 242.5
C 14 254 276265 1135.25 1010 1014 242.5
C 4 254 27213 108.06 1010 1014 242.5
D 13 249 539616 2100.57 995 963 256.4
D 2 249 394636 1535.2 995 963 256.4
D 1 52 252233 979.87 995 963 256.4

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