ASTROSAT CZTI

Data Quality Report

Orbit 48491

Creation date: 2024-09-15T12:40:43.414739
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_081T01_9000006428_48491cztM0_level2.fits modeM0/AS1A13_081T01_9000006428_48491cztM0_level2_quad_clean.evt
Size (bytes)455,592,960106,107,840
Size434.5 MB 101.2 MB
Events in quadrant A6,924,070686,292
Events in quadrant B3,256,574729,735
Events in quadrant C2,793,874699,355
Events in quadrant D3,376,569636,304

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256172
B0145622
C0135032
D0151162

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66083345.054479%
B66081952.950969%
C6608701.059322%
D66081291.952179%

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 7663 6608 46 46 0.60% 0.70%
B 7663 6608 67 67 0.87% 1.01%
C 7663 6608 0 0 0.00% 0.00%
D 7663 6608 58 58 0.76% 0.88%

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 4102068 27652.54 709 694 148.3
A 12 189 42530 282.07 709 694 148.3
A 7 3 36442 241.02 709 694 148.3
B 12 16 383058 2732.09 717 694 140.0
B 5 255 31960 223.4 717 694 140.0
B 12 111 17768 122.0 717 694 140.0
C 3 233 28325 167.89 705 707 164.5
C 1 3 7484 41.2 705 707 164.5
C 14 67 6613 35.9 705 707 164.5
D 2 249 397272 2286.93 698 674 173.4
D 7 38 161944 929.94 698 674 173.4
D 2 120 37630 213.1 698 674 173.4

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