ASTROSAT CZTI

Data Quality Report

Orbit 42895

Creation date: 2024-06-27T22:45:30.972997
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/AS1T05_143T01_9000005830_42895cztM0_level2.fits modeM0/AS1T05_143T01_9000005830_42895cztM0_level2_quad_clean.evt
Size (bytes)333,224,64084,516,480
Size317.8 MB 80.6 MB
Events in quadrant A3,146,819561,339
Events in quadrant B2,287,754593,367
Events in quadrant C2,959,519563,369
Events in quadrant D3,560,220498,468

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124992
B0101702
C0117922
D0139272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0320
C0320
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A48841643.357903%
B4884120.245700%
C4884821.678952%
D48843096.326781%

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 7008 4885 138 138 1.97% 2.82%
B 7008 4885 6 6 0.09% 0.12%
C 7007 4884 75 75 1.07% 1.54%
D 7008 4885 321 321 4.58% 6.57%

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 10 83 546528 5146.53 523 514 106.1
A 15 237 465087 4378.9 523 514 106.1
A 12 189 68966 645.2 523 514 106.1
B 3 112 67478 667.17 533 518 100.4
B 0 229 60721 599.84 533 518 100.4
B 4 171 35077 344.33 533 518 100.4
C 12 2 494145 4084.73 526 532 120.8
C 15 214 209256 1727.23 526 532 120.8
C 14 254 78510 645.28 526 532 120.8
D 1 52 799494 6457.14 509 495 123.7
D 12 6 406681 3282.61 509 495 123.7
D 13 249 164953 1329.07 509 495 123.7

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