ASTROSAT CZTI

Data Quality Report

Orbit 38490

Creation date: 2024-06-27T21:53:27.955434
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/AS1A12_018T01_9000005386_38490cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38490cztM0_level2_quad_clean.evt
Size (bytes)448,073,28088,110,720
Size427.3 MB 84.0 MB
Events in quadrant A3,979,588656,511
Events in quadrant B4,027,052607,888
Events in quadrant C2,423,134607,904
Events in quadrant D5,775,659452,507

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156232
B0150011
C099551
D0203401

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4900260.530612%
B490049910.183673%
C490020.040816%
D4900117624.000000%

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 6933 4901 7 7 0.10% 0.14%
B 6933 4901 317 317 4.57% 6.47%
C 6933 4901 1 1 0.01% 0.02%
D 6933 4901 1147 1147 16.54% 23.40%

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 15 222 1254436 10542.93 594 584 118.9
A 10 83 332442 2790.41 594 584 118.9
A 12 189 44663 370.64 594 584 118.9
B 5 184 759325 7315.59 553 540 103.7
B 8 3 629681 6065.67 553 540 103.7
B 4 171 369216 3554.48 553 540 103.7
C 15 214 204892 1570.04 564 568 130.1
C 0 10 8792 63.19 564 568 130.1
C 15 159 5845 40.55 564 568 130.1
D 12 227 3461358 28099.24 508 493 123.2
D 2 250 85653 691.43 508 493 123.2
D 12 235 82127 662.8 508 493 123.2

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