ASTROSAT CZTI

Data Quality Report

Orbit 42834

Creation date: 2024-06-27T22:44:47.627355
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/AS1T05_138T01_9000005828_42834cztM0_level2.fits modeM0/AS1T05_138T01_9000005828_42834cztM0_level2_quad_clean.evt
Size (bytes)372,971,52090,293,760
Size355.7 MB 86.1 MB
Events in quadrant A3,805,642592,132
Events in quadrant B2,420,581622,790
Events in quadrant C2,956,273611,222
Events in quadrant D4,209,839535,553

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148833
B0108972
C0120792
D0162062

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53191823.421696%
B5319100.188005%
C5319601.128032%
D53193175.959767%

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 7142 5320 151 151 2.11% 2.84%
B 7142 5320 7 7 0.10% 0.13%
C 7142 5320 49 49 0.69% 0.92%
D 7142 5320 304 304 4.26% 5.71%

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 629630 5237.17 583 571 120.1
A 12 189 612815 5097.18 583 571 120.1
A 15 222 192338 1596.54 583 571 120.1
B 0 190 34840 300.27 589 573 114.1
B 0 245 27847 239.0 589 573 114.1
B 0 156 21179 180.57 589 573 114.1
C 14 254 354585 2614.2 574 577 135.4
C 15 214 218437 1608.8 574 577 135.4
C 3 233 85652 628.24 574 577 135.4
D 1 52 1162750 8455.01 560 544 137.5
D 12 233 265679 1928.85 560 544 137.5
D 10 118 243527 1767.69 560 544 137.5

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