ASTROSAT CZTI

Data Quality Report

Orbit 26719

Creation date: 2024-06-27T19:32:05.943424
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/AS1T03_223T01_9000003850_26719cztM0_level2.evt modeM0/AS1T03_223T01_9000003850_26719cztM0_level2_quad_clean.evt
Size (bytes)1,361,724,480221,906,880
Size1.3 GB 211.6 MB
Events in quadrant A8,441,7441,421,835
Events in quadrant B11,693,8171,435,385
Events in quadrant C8,021,7161,401,142
Events in quadrant D11,979,0991,334,342

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0353410
B0454800
C0339410
D0466080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A163471721.052181%
B1634712367.561020%
C163471430.874778%
D163477664.685875%

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 24512 16352 57 57 0.23% 0.35%
B 24512 16352 680 680 2.77% 4.16%
C 24512 16352 3 3 0.01% 0.02%
D 24512 16351 550 550 2.24% 3.36%

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 13 535499 1323.1 2046 2006 403.2
A 13 254 27586 63.44 2046 2006 403.2
A 3 137 18193 40.14 2046 2006 403.2
B 0 189 3325383 8983.17 1978 1930 370.0
B 10 246 559278 1506.49 1978 1930 370.0
B 12 111 44816 115.92 1978 1930 370.0
C 14 238 316480 696.06 1947 1961 451.9
C 15 208 59722 127.83 1947 1961 451.9
C 3 233 44009 93.06 1947 1961 451.9
D 1 52 3305731 6442.31 1922 1881 512.8
D 7 80 884603 1721.26 1922 1881 512.8
D 2 250 287239 556.43 1922 1881 512.8

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