ASTROSAT CZTI

Data Quality Report

Orbit 20240601_A13_077T01_9000006286_level2

Creation date: 2024-06-04T11:43:39.548192
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_077T01_9000006286cztM0_level2.fits modeM0/AS1A13_077T01_9000006286cztM0_level2_quad_clean.evt
Size (bytes)1,254,372,4801,258,482,240
Size1.2 GB 1.2 GB
Events in quadrant A7,432,0887,741,175
Events in quadrant B6,719,9646,244,302
Events in quadrant C7,547,5607,575,457
Events in quadrant D6,355,1486,636,315

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029400
B029380
C029340
D029370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05245110
B05764530
C03215910
D04191830

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01830
B01820
C01830
D01830

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14466457283.959520%
B1446332717518.788935%
C14472530612.115046%
D14477495536.598561%

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 162919 144733 0 0 0.00% 0.00%
B 162919 144589 0 0 0.00% 0.00%
C 162919 144704 0 0 0.00% 0.00%
D 162919 144547 0 0 0.00% 0.00%

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 7 110 6094 8.6 1938 1801 499.2
A 0 29 5781 7.97 1938 1801 499.2
A 14 95 5685 7.78 1938 1801 499.2
B 2 9 6452 13.59 1776 1686 350.7
B 2 8 5311 10.34 1776 1686 350.7
B 3 17 4899 9.16 1776 1686 350.7
C 1 81 5722 7.47 1997 1844 519.2
C 3 202 5705 7.44 1997 1844 519.2
C 1 80 5517 7.07 1997 1844 519.2
D 10 189 4646 5.89 1828 1655 507.6
D 3 14 4642 5.88 1828 1655 507.6
D 10 113 4577 5.76 1828 1655 507.6

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