ASTROSAT CZTI

Data Quality Report

Orbit 41272

Creation date: 2024-06-27T22:26:50.469995
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_052T04_9000005638_41272cztM0_level2.fits modeM0/AS1A12_052T04_9000005638_41272cztM0_level2_quad_clean.evt
Size (bytes)313,928,64088,588,800
Size299.4 MB 84.5 MB
Events in quadrant A2,738,509599,381
Events in quadrant B2,581,813613,642
Events in quadrant C2,963,185574,593
Events in quadrant D2,952,612549,165

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109493
B0107562
C0116752
D0119332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4935130.263425%
B4935230.466059%
C49352134.316109%
D4935601.215805%

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 7056 4936 4 4 0.06% 0.08%
B 7056 4936 14 14 0.20% 0.28%
C 7056 4936 214 214 3.03% 4.34%
D 7056 4936 60 60 0.85% 1.22%

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 501911 4353.04 569 557 115.2
A 12 189 25395 215.66 569 557 115.2
A 13 6 7936 64.07 569 557 115.2
B 0 190 74510 676.99 561 545 109.3
B 7 202 72601 659.52 561 545 109.3
B 0 186 69266 628.99 561 545 109.3
C 0 10 565850 4484.78 547 552 126.0
C 15 214 207700 1643.4 547 552 126.0
C 15 111 46608 365.38 547 552 126.0
D 5 222 332264 2449.95 564 550 135.4
D 1 52 214235 1578.22 564 550 135.4
D 13 249 94858 696.53 564 550 135.4

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