ASTROSAT CZTI

Data Quality Report

Orbit 39170

Creation date: 2024-06-27T22:01:20.780931
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_39170cztM0_level2.fits modeM0/AS1A12_054T02_9000005444_39170cztM0_level2_quad_clean.evt
Size (bytes)441,498,24088,744,320
Size421.0 MB 84.6 MB
Events in quadrant A2,825,104654,427
Events in quadrant B2,433,142659,040
Events in quadrant C2,576,312610,763
Events in quadrant D8,113,597407,310

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113523
B0103412
C0105292
D0276812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5074110.216791%
B5074110.216791%
C507490.177375%
D5074181235.711470%

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 7017 5075 6 6 0.09% 0.12%
B 7017 5075 4 4 0.06% 0.08%
C 7017 5075 5 5 0.07% 0.10%
D 7017 5075 1606 1606 22.89% 31.65%

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 414554 3416.69 609 599 121.2
A 13 248 40148 326.43 609 599 121.2
A 2 79 11878 93.09 609 599 121.2
B 5 172 46423 403.06 596 580 113.7
B 0 213 34868 301.46 596 580 113.7
B 12 111 13936 117.43 596 580 113.7
C 15 214 216126 1621.23 578 581 133.0
C 9 187 99609 744.85 578 581 133.0
C 0 10 4754 31.39 578 581 133.0
D 12 235 4397584 34933.48 519 504 125.9
D 12 227 742921 5898.28 519 504 125.9
D 2 249 572374 4543.34 519 504 125.9

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