ASTROSAT CZTI

Data Quality Report

Orbit 38449

Creation date: 2024-06-27T21:52:54.306409
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_018T01_9000005386_38449cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38449cztM0_level2_quad_clean.evt
Size (bytes)430,597,44087,840,000
Size410.6 MB 83.8 MB
Events in quadrant A2,734,978627,237
Events in quadrant B5,562,049528,357
Events in quadrant C2,504,621604,287
Events in quadrant D4,740,361541,284

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112023
B0198972
C0104152
D0174872

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A511190.176091%
B5111108521.228722%
C5111120.234788%
D51123096.044601%

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 7234 5112 7 7 0.10% 0.14%
B 7234 5111 820 820 11.34% 16.04%
C 7234 5112 6 6 0.08% 0.12%
D 7235 5113 326 326 4.51% 6.38%

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 401909 3404.97 586 573 117.9
A 15 223 20929 172.7 586 573 117.9
A 13 6 14283 116.32 586 573 117.9
B 8 3 2648581 26357.02 536 522 100.5
B 5 184 573043 5698.49 536 522 100.5
B 0 189 87215 862.88 536 522 100.5
C 15 214 216883 1620.98 576 578 133.4
C 0 10 28580 209.85 576 578 133.4
C 1 241 10878 77.19 576 578 133.4
D 2 16 1477484 10790.25 567 551 136.9
D 2 153 428044 3123.2 567 551 136.9
D 2 249 215778 1572.42 567 551 136.9

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