ASTROSAT CZTI

Data Quality Report

Orbit 39485

Creation date: 2024-06-27T22:05:11.100511
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/AS1C07_001T02_9000005486_39485cztM0_level2.fits modeM0/AS1C07_001T02_9000005486_39485cztM0_level2_quad_clean.evt
Size (bytes)396,002,88086,950,080
Size377.7 MB 82.9 MB
Events in quadrant A5,488,153549,598
Events in quadrant B2,763,927608,412
Events in quadrant C3,129,238572,484
Events in quadrant D2,860,350526,461

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200002
B0119361
C0126901
D0122911

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A536556210.475303%
B5365420.782852%
C5365500.931966%
D5365991.845294%

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 6978 5366 590 590 8.46% 11.00%
B 6978 5366 17 17 0.24% 0.32%
C 6978 5366 47 47 0.67% 0.88%
D 6978 5366 70 70 1.00% 1.30%

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 2678987 23042.34 569 554 116.2
A 10 83 380428 3268.03 569 554 116.2
A 15 174 189952 1629.38 569 554 116.2
B 5 255 453627 4016.12 581 563 112.8
B 12 111 14378 122.46 581 563 112.8
B 11 111 12927 109.6 581 563 112.8
C 15 208 565578 4240.92 572 575 133.2
C 15 214 223439 1672.82 572 575 133.2
C 9 187 96764 722.0 572 575 133.2
D 13 249 245938 1751.39 569 551 140.1
D 12 227 186238 1325.3 569 551 140.1
D 12 0 89326 633.61 569 551 140.1

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