ASTROSAT CZTI

Data Quality Report

Orbit 39455

Creation date: 2024-06-27T22:04:45.371672
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_025T17_9000005476_39455cztM0_level2.fits modeM0/AS1A12_025T17_9000005476_39455cztM0_level2_quad_clean.evt
Size (bytes)1,224,982,080231,117,120
Size1.1 GB 220.4 MB
Events in quadrant A19,033,4801,210,473
Events in quadrant B6,907,9461,673,097
Events in quadrant C8,048,2851,613,695
Events in quadrant D10,171,6611,444,610

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0663134
B0312103
C0335353
D0407663

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03120
B03120
C03120
D03120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15291424327.748349%
B15291350.228893%
C152911100.719377%
D152917154.675953%

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 19470 15294 3820 3820 19.62% 24.98%
B 19470 15294 12 12 0.06% 0.08%
C 19470 15294 94 94 0.48% 0.61%
D 19470 15294 663 663 3.41% 4.34%

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 12451457 43849.8 1407 1381 283.9
A 10 83 933011 3281.25 1407 1381 283.9
A 9 143 94596 328.31 1407 1381 283.9
B 8 3 203616 623.7 1671 1629 323.9
B 0 230 69344 209.09 1671 1629 323.9
B 12 111 41118 121.94 1671 1629 323.9
C 15 214 623341 1627.42 1638 1650 382.0
C 15 208 552113 1440.97 1638 1650 382.0
C 9 187 425254 1108.88 1638 1650 382.0
D 12 227 2644777 6671.68 1615 1571 396.2
D 2 249 574274 1445.55 1615 1571 396.2
D 1 52 203207 508.95 1615 1571 396.2

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