ASTROSAT CZTI

Data Quality Report

Orbit 39162

Creation date: 2024-06-27T22:01:16.479003
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/AS1A12_054T02_9000005444_39162cztM0_level2.fits modeM0/AS1A12_054T02_9000005444_39162cztM0_level2_quad_clean.evt
Size (bytes)574,617,60096,744,960
Size548.0 MB 92.3 MB
Events in quadrant A3,512,581699,702
Events in quadrant B2,835,093707,866
Events in quadrant C2,924,771678,869
Events in quadrant D11,517,496410,440

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143802
B0128381
C0126371
D0385091

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6190881.421648%
B6190470.759289%
C619050.080775%
D6190273444.168013%

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 8995 6192 61 61 0.68% 0.99%
B 8995 6192 26 26 0.29% 0.42%
C 8995 6192 0 0 0.00% 0.00%
D 8995 6192 2561 2561 28.47% 41.36%

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 83 478884 3445.33 686 672 138.8
A 2 79 254363 1827.74 686 672 138.8
A 13 248 108988 780.37 686 672 138.8
B 5 172 145401 1109.23 678 660 130.5
B 12 111 16253 119.5 678 660 130.5
B 11 111 15003 109.92 678 660 130.5
C 15 214 257043 1646.83 667 672 155.7
C 9 187 54047 342.86 667 672 155.7
C 0 10 6128 35.05 667 672 155.7
D 12 235 8841352 61999.29 584 568 142.6
D 12 233 129858 906.69 584 568 142.6
D 2 249 73803 513.59 584 568 142.6

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