ASTROSAT CZTI

Data Quality Report

Orbit 39634

Creation date: 2024-06-27T22:07:06.185718
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_018T01_9000005488_39634cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39634cztM0_level2_quad_clean.evt
Size (bytes)464,676,48087,955,200
Size443.2 MB 83.9 MB
Events in quadrant A6,251,751557,943
Events in quadrant B2,317,954637,320
Events in quadrant C4,909,109569,749
Events in quadrant D3,345,106557,124

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220622
B0100601
C0178681
D0134811

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A486166113.598025%
B4861260.534869%
C486150010.285949%
D48611563.209216%

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 6863 4862 630 630 9.18% 12.96%
B 6863 4862 18 18 0.26% 0.37%
C 6863 4862 466 466 6.79% 9.58%
D 6863 4862 122 122 1.78% 2.51%

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 3788627 34418.06 547 536 110.1
A 10 83 333295 3023.4 547 536 110.1
A 9 143 7918 67.07 547 536 110.1
B 5 172 55184 506.99 564 549 107.8
B 5 255 32859 299.82 564 549 107.8
B 12 111 12603 111.86 564 549 107.8
C 15 208 2339942 18601.14 546 551 125.8
C 15 214 194154 1539.39 546 551 125.8
C 9 187 194027 1538.38 546 551 125.8
D 13 249 735680 5385.0 558 543 136.5
D 1 52 327048 2391.7 558 543 136.5
D 12 233 51606 374.05 558 543 136.5

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