ASTROSAT CZTI

Data Quality Report

Orbit 38055

Creation date: 2024-06-27T21:47:51.666206
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/AS1A11_044T01_9000005360_38055cztM0_level2.fits modeM0/AS1A11_044T01_9000005360_38055cztM0_level2_quad_clean.evt
Size (bytes)360,596,160101,206,080
Size343.9 MB 96.5 MB
Events in quadrant A2,961,057690,706
Events in quadrant B2,860,764718,629
Events in quadrant C3,251,706682,573
Events in quadrant D3,855,832596,577

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119583
B0117782
C0127652
D0149002

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5379170.316044%
B5379370.687860%
C53791232.286670%
D53793917.269009%

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 9205 5381 8 8 0.09% 0.15%
B 9205 5381 16 16 0.17% 0.30%
C 9204 5380 107 107 1.16% 1.99%
D 9205 5381 343 343 3.73% 6.37%

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 363285 2841.06 636 626 127.6
A 12 227 84194 654.67 636 626 127.6
A 7 3 25949 198.38 636 626 127.6
B 0 229 91733 759.57 643 626 119.9
B 4 171 70598 583.36 643 626 119.9
B 5 184 61226 505.23 643 626 119.9
C 1 23 491972 3390.3 632 636 144.9
C 15 214 223888 1540.48 632 636 144.9
C 3 233 35196 238.47 632 636 144.9
D 12 227 843970 5744.18 614 599 146.8
D 10 199 224569 1525.45 614 599 146.8
D 13 249 207712 1410.64 614 599 146.8

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