ASTROSAT CZTI

Data Quality Report

Orbit 11226

Creation date: 2024-06-27T16:10:01.254080
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/AS1T01_200T01_9000001638_11226cztM0_level2.evt modeM0/AS1T01_200T01_9000001638_11226cztM0_level2_quad_clean.evt
Size (bytes)1,558,621,440272,880,000
Size1.5 GB 260.2 MB
Events in quadrant A18,123,5351,665,747
Events in quadrant B9,020,6481,879,425
Events in quadrant C7,476,5521,894,519
Events in quadrant D11,516,4931,732,384

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03240
B03240
C03240
D03240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0647974
B0373363
C0337453
D0449183

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15811344221.769654%
B158114562.884068%
C158112621.657074%
D1581115559.834925%

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 17891 15814 2321 2321 12.97% 14.68%
B 17891 15814 207 207 1.16% 1.31%
C 17891 15814 80 80 0.45% 0.51%
D 17891 15814 1033 1033 5.77% 6.53%

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 14 238 6287430 19033.05 1637 1603 330.3
A 8 5 4761004 14411.14 1637 1603 330.3
A 15 174 317075 955.23 1637 1603 330.3
B 4 239 1652876 4855.44 1794 1746 340.1
B 15 204 222841 650.17 1794 1746 340.1
B 4 80 74262 213.25 1794 1746 340.1
C 4 254 594199 1446.31 1764 1767 409.6
C 13 61 12970 27.35 1764 1767 409.6
C 14 234 5357 8.76 1764 1767 409.6
D 1 52 2954950 7352.06 1681 1633 401.7
D 8 195 398399 987.72 1681 1633 401.7
D 10 253 383956 951.76 1681 1633 401.7

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