ASTROSAT CZTI

Data Quality Report

Orbit 44921

Creation date: 2024-06-27T23:08:00.331186
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_017T02_9000006032_44921cztM0_level2.fits modeM0/AS1A13_017T02_9000006032_44921cztM0_level2_quad_clean.evt
Size (bytes)490,636,800111,674,880
Size467.9 MB 106.5 MB
Events in quadrant A5,345,799745,945
Events in quadrant B3,589,902771,772
Events in quadrant C3,166,909753,167
Events in quadrant D5,552,091654,227

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206612
B0147753
C0138182
D0208842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65381582.416641%
B65371532.340523%
C6537550.841365%
D65384236.469868%

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 7623 6539 4 4 0.05% 0.06%
B 7622 6538 66 66 0.87% 1.01%
C 7622 6538 1 1 0.01% 0.02%
D 7623 6539 301 301 3.95% 4.60%

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 2271777 14303.69 768 752 158.8
A 0 247 51385 318.9 768 752 158.8
A 7 3 27280 167.08 768 752 158.8
B 5 172 124545 829.85 762 740 149.2
B 0 183 113634 756.72 762 740 149.2
B 15 36 103989 692.07 762 740 149.2
C 0 207 138433 773.48 761 766 178.0
C 1 3 20797 112.54 761 766 178.0
C 3 233 16633 89.15 761 766 178.0
D 1 52 895477 4861.65 742 720 184.0
D 2 249 457297 2480.81 742 720 184.0
D 13 249 438833 2380.48 742 720 184.0

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