ASTROSAT CZTI

Data Quality Report

Orbit 25444

Creation date: 2024-06-27T19:17:43.727328
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/AS1A09_085T02_9000003716_25444cztM0_level2.evt modeM0/AS1A09_085T02_9000003716_25444cztM0_level2_quad_clean.evt
Size (bytes)511,102,08078,428,160
Size487.4 MB 74.8 MB
Events in quadrant A3,388,499493,503
Events in quadrant B3,518,458495,656
Events in quadrant C3,868,000471,892
Events in quadrant D4,263,849461,259

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140420
B0144150
C0155300
D0168870

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6487600.924927%
B64871151.772776%
C64861622.497687%
D64861432.204749%

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 7641 6486 0 0 0.00% 0.00%
B 7641 6486 21 21 0.27% 0.32%
C 7640 6485 21 21 0.27% 0.32%
D 7640 6485 79 79 1.03% 1.22%

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 0 247 9598 50.18 875 859 174.1
A 13 254 9391 48.99 875 859 174.1
A 15 173 8166 41.96 875 859 174.1
B 5 172 109734 678.47 863 844 160.5
B 12 111 19675 117.33 863 844 160.5
B 11 111 17522 103.92 863 844 160.5
C 9 54 477504 2449.88 835 842 194.6
C 14 238 137269 701.19 835 842 194.6
C 13 61 5802 25.49 835 842 194.6
D 1 52 784928 3885.24 842 819 201.8
D 8 195 186841 921.73 842 819 201.8
D 2 72 49973 243.56 842 819 201.8

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