ASTROSAT CZTI

Data Quality Report

Orbit 37465

Creation date: 2024-06-27T21:40:22.092128
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/AS1A11_027T01_9000005324_37465cztM0_level2.evt modeM0/AS1A11_027T01_9000005324_37465cztM0_level2_quad_clean.evt
Size (bytes)447,696,00098,101,440
Size427.0 MB 93.6 MB
Events in quadrant A3,491,533649,350
Events in quadrant B2,741,252676,950
Events in quadrant C2,799,246676,581
Events in quadrant D4,177,646607,944

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138093
B0114902
C0112322
D0158132

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5135621.207400%
B5135881.713729%
C5135771.499513%
D51354879.483934%

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 7167 5136 52 52 0.73% 1.01%
B 7167 5136 62 62 0.87% 1.21%
C 7167 5136 63 63 0.88% 1.23%
D 7167 5136 444 444 6.20% 8.64%

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 15 222 674942 5815.81 582 571 116.0
A 10 83 276344 2378.28 582 571 116.0
A 13 248 242712 2088.24 582 571 116.0
B 5 172 185553 1662.17 582 566 111.3
B 15 35 79452 708.82 582 566 111.3
B 0 229 42816 379.63 582 566 111.3
C 15 214 221085 1654.97 581 585 133.2
C 0 10 172665 1291.55 581 585 133.2
C 14 254 118519 885.16 581 585 133.2
D 13 249 1732830 12926.44 554 540 134.0
D 2 249 78932 584.97 554 540 134.0
D 2 153 65428 484.2 554 540 134.0

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