ASTROSAT CZTI

Data Quality Report

Orbit 33672

Creation date: 2024-06-27T20:51:20.996299
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/AS1T04_076T01_9000004810_33672cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33672cztM0_level2_quad_clean.evt
Size (bytes)625,481,28081,210,240
Size596.5 MB 77.4 MB
Events in quadrant A7,106,543408,169
Events in quadrant B3,390,955575,501
Events in quadrant C3,351,879578,798
Events in quadrant D4,742,983532,767

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0245763
B0134062
C0135002
D0179472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5182212140.930143%
B51822484.785797%
C5182861.659591%
D51822665.133153%

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 7093 5181 1757 1757 24.77% 33.91%
B 7094 5183 216 216 3.04% 4.17%
C 7094 5183 70 70 0.99% 1.35%
D 7094 5183 248 248 3.50% 4.78%

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 15 169 3501800 41190.33 417 410 85.0
A 15 237 1976933 23251.8 417 410 85.0
A 13 254 6248 68.68 417 410 85.0
B 5 172 836278 7231.58 605 590 115.6
B 15 201 45384 387.62 605 590 115.6
B 15 222 35455 301.7 605 590 115.6
C 3 233 453642 3237.22 600 606 139.9
C 0 10 258400 1842.09 600 606 139.9
C 15 214 242328 1727.25 600 606 139.9
D 1 52 779283 4893.4 575 564 159.1
D 8 195 697515 4379.58 575 564 159.1
D 8 230 352096 2209.0 575 564 159.1

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