ASTROSAT CZTI

Data Quality Report

Orbit 20160325_P01_010T01_9000000398_level2

Creation date: 2025-01-04T17:35:07.239622
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/AS1P01_010T01_9000000398cztM0_level2.fits modeM0/AS1P01_010T01_9000000398cztM0_level2_quad_clean.evt
Size (bytes)1,430,389,440481,674,240
Size1.3 GB 459.4 MB
Events in quadrant A8,544,098906,172
Events in quadrant B8,338,550915,456
Events in quadrant C8,147,006815,136
Events in quadrant D7,127,142781,801

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02370
B02370
C02370
D02380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033020
B033040
C033020
D033060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03321490
B03346480
C04874890
D03759670

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16285015730.965920%
B16284516711.026129%
C162803117037.188442%
D16283235842.201042%

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 201666 162887 0 0 0.00% 0.00%
B 201666 162880 0 0 0.00% 0.00%
C 201666 162837 0 0 0.00% 0.00%
D 201666 162793 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 14 188 8364 10.98 2218 2073 573.1
A 0 29 8019 10.38 2218 2073 573.1
A 14 204 7336 9.18 2218 2073 573.1
B 2 9 7504 12.91 2197 2095 419.1
B 12 226 6432 10.35 2197 2095 419.1
B 14 254 6010 9.34 2197 2095 419.1
C 7 111 5728 6.49 2156 1991 576.1
C 1 80 5392 5.9 2156 1991 576.1
C 2 191 5371 5.87 2156 1991 576.1
D 3 14 5410 6.28 2036 1847 567.6
D 11 82 5338 6.15 2036 1847 567.6
D 4 160 5246 5.99 2036 1847 567.6

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