ASTROSAT CZTI

Data Quality Report

Orbit 44865

Creation date: 2024-06-27T23:07:23.291279
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/AS1A13_017T01_9000006028_44865cztM0_level2.fits modeM0/AS1A13_017T01_9000006028_44865cztM0_level2_quad_clean.evt
Size (bytes)502,104,960115,557,120
Size478.8 MB 110.2 MB
Events in quadrant A5,388,021787,617
Events in quadrant B3,414,856827,783
Events in quadrant C3,537,781780,146
Events in quadrant D5,749,158656,918

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209572
B0143852
C0147092
D0215272

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63982844.438887%
B63981612.516411%
C63982003.125977%
D639771211.130217%

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 7588 6399 20 20 0.26% 0.31%
B 7588 6399 11 11 0.14% 0.17%
C 7588 6399 72 72 0.95% 1.13%
D 7587 6398 448 448 5.90% 7.00%

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 2230150 13671.94 796 782 163.1
A 13 248 68051 412.54 796 782 163.1
A 13 254 9170 51.44 796 782 163.1
B 0 186 94973 607.31 797 772 155.1
B 0 168 53044 336.99 797 772 155.1
B 0 183 46294 293.48 797 772 155.1
C 14 254 309367 1679.05 791 797 183.8
C 12 250 48592 260.07 791 797 183.8
C 12 2 40007 213.36 791 797 183.8
D 2 249 1010158 5363.8 764 743 188.2
D 1 52 629698 3342.13 764 743 188.2
D 13 174 387213 2053.61 764 743 188.2

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