ASTROSAT CZTI

Data Quality Report

Orbit 40479

Creation date: 2024-06-27T22:16:37.033772
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_022T01_9000005540_40479cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40479cztM0_level2_quad_clean.evt
Size (bytes)302,290,56088,447,680
Size288.3 MB 84.4 MB
Events in quadrant A2,800,018601,933
Events in quadrant B2,390,277614,537
Events in quadrant C2,575,691588,309
Events in quadrant D2,992,939487,224

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118963
B0111242
C0112942
D0128802

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5516140.253807%
B551650.090645%
C551650.090645%
D551666212.001450%

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 7009 5517 4 4 0.06% 0.07%
B 7009 5517 0 0 0.00% 0.00%
C 7009 5517 2 2 0.03% 0.04%
D 7008 5516 124 124 1.77% 2.25%

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 495765 4085.53 585 573 121.2
A 12 189 26515 214.03 585 573 121.2
A 13 6 9456 73.28 585 573 121.2
B 3 112 67086 590.42 581 564 112.7
B 4 171 25044 217.28 581 564 112.7
B 12 111 14288 121.81 581 564 112.7
C 15 214 241052 1779.7 575 579 135.1
C 14 254 54803 401.3 575 579 135.1
C 9 187 15587 111.07 575 579 135.1
D 2 250 548308 4178.54 534 519 131.1
D 12 191 180276 1371.19 534 519 131.1
D 12 227 55758 421.36 534 519 131.1

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