ASTROSAT CZTI

Data Quality Report

Orbit 38694

Creation date: 2024-06-27T21:55:13.061247
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_054T01_9000005392_38694cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38694cztM0_level2_quad_clean.evt
Size (bytes)511,130,88084,784,320
Size487.5 MB 80.9 MB
Events in quadrant A2,788,054635,841
Events in quadrant B3,879,794616,690
Events in quadrant C2,817,211610,887
Events in quadrant D9,044,235351,165

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112132
B0148211
C0113391
D0303811

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5032110.218601%
B50323877.690779%
C5032230.457075%
D5032223244.356121%

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 7185 5033 6 6 0.08% 0.12%
B 7185 5033 269 269 3.74% 5.34%
C 7185 5033 23 23 0.32% 0.46%
D 7185 5033 1984 1984 27.61% 39.42%

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 357031 3003.25 593 583 118.7
A 13 248 118505 993.55 593 583 118.7
A 13 6 9617 76.12 593 583 118.7
B 4 171 1568816 14301.97 575 561 109.7
B 12 111 13164 114.93 575 561 109.7
B 11 111 12343 107.44 575 561 109.7
C 14 254 304629 2290.78 572 576 132.7
C 15 214 207586 1559.65 572 576 132.7
C 2 16 52260 389.4 572 576 132.7
D 2 16 6628687 54306.77 499 487 122.1
D 12 227 139198 1136.5 499 487 122.1
D 2 249 85034 692.72 499 487 122.1

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