ASTROSAT CZTI

Data Quality Report

Orbit 43919

Creation date: 2024-06-27T22:57:12.018200
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/AS1A13_009T02_9000005914_43919cztM0_level2.fits modeM0/AS1A13_009T02_9000005914_43919cztM0_level2_quad_clean.evt
Size (bytes)431,524,80069,068,160
Size411.5 MB 65.9 MB
Events in quadrant A7,129,959341,378
Events in quadrant B2,344,335509,473
Events in quadrant C2,015,657486,174
Events in quadrant D4,121,298426,945

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0245011
B0102541
C095231
D0154701

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4655170236.562836%
B4655410.880773%
C465540.085929%
D46552886.186896%

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 4655 4655 1552 1552 33.34% 33.34%
B 4655 4655 26 26 0.56% 0.56%
C 4655 4655 0 0 0.00% 0.00%
D 4655 4655 289 289 6.21% 6.21%

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 3801449 44915.63 401 393 84.6
A 15 223 1063090 12557.49 401 393 84.6
A 10 83 607313 7171.74 401 393 84.6
B 5 235 118638 1185.21 498 483 99.7
B 5 172 90895 906.92 498 483 99.7
B 0 199 62962 626.72 498 483 99.7
C 3 233 19841 166.84 488 491 116.0
C 14 254 18758 157.5 488 491 116.0
C 14 96 16742 140.12 488 491 116.0
D 1 52 1454954 11895.83 476 461 122.3
D 5 235 316906 2588.1 476 461 122.3
D 5 184 107088 872.07 476 461 122.3

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