ASTROSAT CZTI

Data Quality Report

Orbit 19264

Creation date: 2024-06-27T18:00:48.937054
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_088T02_9000002850_19264cztM0_level2.evt modeM0/AS1A05_088T02_9000002850_19264cztM0_level2_quad_clean.evt
Size (bytes)480,297,60082,284,480
Size458.0 MB 78.5 MB
Events in quadrant A3,431,389514,927
Events in quadrant B3,492,621526,141
Events in quadrant C3,664,030513,501
Events in quadrant D3,537,151504,284

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143452
B0144972
C0149372
D0146322

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6202831.338278%
B6202891.435021%
C62021372.208965%
D6202851.370526%

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 7507 6202 3 3 0.04% 0.05%
B 7507 6202 6 6 0.08% 0.10%
C 7507 6202 3 3 0.04% 0.05%
D 7507 6202 17 17 0.23% 0.27%

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 9 143 28955 161.82 878 863 173.6
A 3 1 16712 91.29 878 863 173.6
A 13 254 7859 40.3 878 863 173.6
B 0 190 29535 174.75 875 856 164.1
B 12 111 19010 110.62 875 856 164.1
B 11 111 16717 96.65 875 856 164.1
C 3 233 197098 1000.63 854 864 196.1
C 14 238 135252 685.27 854 864 196.1
C 13 61 5966 26.02 854 864 196.1
D 10 66 141905 678.79 865 844 207.8
D 13 104 59963 284.48 865 844 207.8
D 1 52 55271 261.9 865 844 207.8

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