ASTROSAT CZTI

Data Quality Report

Orbit 08842

Creation date: 2024-06-27T15:37:55.372126
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/AS1G07_087T01_9000001228_08842cztM0_level2.evt modeM0/AS1G07_087T01_9000001228_08842cztM0_level2_quad_clean.evt
Size (bytes)459,964,80096,295,680
Size438.7 MB 91.8 MB
Events in quadrant A3,367,740629,216
Events in quadrant B3,442,443634,571
Events in quadrant C3,045,029615,335
Events in quadrant D3,649,249599,957

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01419241
B01418045
C01328037
D01467439

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6262851.357394%
B62601191.900958%
C6263641.021875%
D62621642.618972%

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 7533 6277 1 1 0.01% 0.02%
B 7533 6278 30 30 0.40% 0.48%
C 7533 6276 0 0 0.00% 0.00%
D 7533 6278 90 90 1.19% 1.43%

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 8 5 136777 841.5 816 802 161.6
A 15 174 51349 312.82 816 802 161.6
A 13 164 31989 193.01 816 802 161.6
B 4 48 263618 1736.71 809 790 151.3
B 0 214 21719 138.29 809 790 151.3
B 12 111 15454 96.9 809 790 151.3
C 13 61 5919 28.6 780 782 179.6
C 1 16 3562 15.48 780 782 179.6
C 3 202 2013 6.85 780 782 179.6
D 1 52 369964 1972.78 775 757 187.1
D 8 195 199704 1063.03 775 757 187.1
D 2 152 37688 197.33 775 757 187.1

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