ASTROSAT CZTI

Data Quality Report

Orbit 41897

Creation date: 2024-06-27T22:34:08.188508
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_099T01_9000005716_41897cztM0_level2.fits modeM0/AS1A12_099T01_9000005716_41897cztM0_level2_quad_clean.evt
Size (bytes)386,504,64081,717,120
Size368.6 MB 77.9 MB
Events in quadrant A2,863,862569,965
Events in quadrant B3,035,934587,622
Events in quadrant C3,122,131536,207
Events in quadrant D4,894,060428,373

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115282
B0123732
C0123512
D0179352

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5025190.378109%
B50251062.109453%
C50252975.910448%
D5025100119.920398%

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 7057 5026 14 14 0.20% 0.28%
B 7057 5026 67 67 0.95% 1.33%
C 7057 5026 291 291 4.12% 5.79%
D 7057 5026 893 893 12.65% 17.77%

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 518821 4532.42 556 546 114.3
A 14 24 181763 1584.78 556 546 114.3
A 13 254 7555 61.3 556 546 114.3
B 5 255 792422 7397.41 552 536 107.0
B 0 190 53598 495.68 552 536 107.0
B 7 202 14952 134.67 552 536 107.0
C 0 10 855568 7077.82 519 523 120.8
C 15 214 195234 1611.76 519 523 120.8
C 14 254 24623 199.49 519 523 120.8
D 5 222 2593086 21317.02 500 486 121.6
D 12 6 119463 978.26 500 486 121.6
D 13 249 93779 767.08 500 486 121.6

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