ASTROSAT CZTI

Data Quality Report

Orbit 00585

Creation date: 2024-06-27T14:00:10.178131
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_118T02_9000000082_00585cztM0_level2.evt modeM0/AS1P01_118T02_9000000082_00585cztM0_level2_quad_clean.evt
Size (bytes)803,462,40061,508,160
Size766.2 MB 58.7 MB
Events in quadrant A6,032,184380,240
Events in quadrant B6,133,128381,899
Events in quadrant C5,415,485379,954
Events in quadrant D6,412,356362,351

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215753
B0218692
C0197362
D0227402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A509970.137282%
B5099150.294175%
C509920.039223%
D50992114.138066%

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 7225 5100 124 124 1.72% 2.43%
B 7225 5100 140 140 1.94% 2.75%
C 7225 5100 27 27 0.37% 0.53%
D 7225 5100 379 379 5.25% 7.43%

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 0 149 73454 215.63 1513 1503 333.7
A 13 160 60990 178.27 1513 1503 333.7
A 0 238 35535 101.99 1513 1503 333.7
B 4 250 249262 700.14 1488 1500 353.9
B 4 206 68694 189.88 1488 1500 353.9
B 7 221 46344 126.72 1488 1500 353.9
C 15 241 36344 91.97 1357 1407 379.9
C 0 64 15910 38.18 1357 1407 379.9
C 10 17 15135 36.14 1357 1407 379.9
D 1 4 209219 452.34 1385 1392 459.4
D 13 221 172307 372.0 1385 1392 459.4
D 13 216 90160 193.21 1385 1392 459.4

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