ASTROSAT CZTI

Data Quality Report

Orbit 39369

Creation date: 2024-06-27T22:03:45.006778
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_9000005470_39369cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39369cztM0_level2_quad_clean.evt
Size (bytes)499,596,480124,948,800
Size476.5 MB 119.2 MB
Events in quadrant A3,805,744843,033
Events in quadrant B4,142,134856,119
Events in quadrant C3,819,035818,109
Events in quadrant D6,136,867738,002

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161223
B0175512
C0160832
D0234072

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7594120.158019%
B75941071.409007%
C7594230.302871%
D75943955.201475%

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 10700 7596 4 4 0.04% 0.05%
B 10700 7596 46 46 0.43% 0.61%
C 10700 7596 15 15 0.14% 0.20%
D 10700 7596 310 310 2.90% 4.08%

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 533558 3115.71 839 821 171.0
A 3 1 15233 84.29 839 821 171.0
A 13 254 13247 72.67 839 821 171.0
B 5 172 759830 4707.07 831 806 161.3
B 4 170 67252 412.06 831 806 161.3
B 5 255 24486 146.85 831 806 161.3
C 15 214 318023 1660.62 816 820 191.0
C 3 110 130012 676.35 816 820 191.0
C 14 254 107066 556.22 816 820 191.0
D 12 235 2245684 11479.88 799 776 195.6
D 13 249 463882 2368.2 799 776 195.6
D 2 250 102435 519.86 799 776 195.6

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