ASTROSAT CZTI

Data Quality Report

Orbit 50164

Creation date: 2025-01-07T08:21:47.846237
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/AS1C09_003T01_9000006442_50164cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50164cztM0_level2_quad_clean.evt
Size (bytes)1,460,283,84061,706,880
Size1.4 GB 58.8 MB
Events in quadrant A16,723,712191,450
Events in quadrant B4,574,773724,341
Events in quadrant C14,391,669300,732
Events in quadrant D17,788,990129,413

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0547990
B0188570
C0478960
D0579400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7499573476.463528%
B74992443.253767%
C7499438658.487798%
D7498627583.688984%

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 7498 7498 5768 5768 76.93% 76.93%
B 7499 7499 202 202 2.69% 2.69%
C 7499 7499 4195 4195 55.94% 55.94%
D 7497 7497 6344 6344 84.62% 84.62%

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 98 9574073 66749.51 559 543 143.4
A 6 250 1992172 13886.23 559 543 143.4
A 8 8 744481 5186.95 559 543 143.4
B 3 249 474892 2948.65 755 728 160.8
B 5 185 335369 2081.01 755 728 160.8
B 10 247 125556 776.26 755 728 160.8
C 1 60 1734279 11925.45 523 521 145.4
C 15 213 1468839 10099.66 523 521 145.4
C 15 197 1306485 8982.92 523 521 145.4
D 15 185 2041540 15909.43 435 421 128.3
D 15 142 1806003 14073.55 435 421 128.3
D 15 168 1533356 11948.41 435 421 128.3

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