ASTROSAT CZTI

Data Quality Report

Orbit 16742

Creation date: 2024-06-27T17:27:05.350209
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/AS1A05_202T01_9000002484_16742cztM0_level2.evt modeM0/AS1A05_202T01_9000002484_16742cztM0_level2_quad_clean.evt
Size (bytes)504,590,400109,105,920
Size481.2 MB 104.1 MB
Events in quadrant A3,867,958717,648
Events in quadrant B3,084,714747,049
Events in quadrant C3,226,905715,924
Events in quadrant D4,679,410688,722

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154742
B0130831
C0135561
D0182381

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62342373.801732%
B6234831.331408%
C62341031.652230%
D62341953.128008%

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 7230 6235 126 126 1.74% 2.02%
B 7230 6236 4 4 0.06% 0.06%
C 7230 6235 2 2 0.03% 0.03%
D 7230 6236 117 117 1.62% 1.88%

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 15 174 989752 6578.55 746 728 150.3
A 10 234 11051 68.66 746 728 150.3
A 0 226 6577 38.9 746 728 150.3
B 15 35 45049 310.3 754 734 142.8
B 5 236 37404 256.77 754 734 142.8
B 10 16 29359 200.44 754 734 142.8
C 14 238 111280 652.59 731 734 169.4
C 7 247 111236 652.33 731 734 169.4
C 3 233 101154 592.82 731 734 169.4
D 2 16 764546 4336.68 731 710 176.1
D 1 52 755868 4287.41 731 710 176.1
D 12 110 115904 654.01 731 710 176.1

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