ASTROSAT CZTI

Data Quality Report

Orbit 20151128_P01_161T02_9000000184_level2

Creation date: 2025-10-24T18:17:51.897936
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/AS1P01_161T02_9000000184cztM0_level2.fits modeM0/AS1P01_161T02_9000000184cztM0_level2_quad_clean.evt
Size (bytes)381,833,280422,144,640
Size364.1 MB 402.6 MB
Events in quadrant A2,215,0542,583,958
Events in quadrant B2,192,7582,540,509
Events in quadrant C2,192,7502,442,828
Events in quadrant D1,848,7762,104,470

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09200
B09200
C09180
D09200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01962620
B02103500
C01965560
D02118950

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0730
B0730
C0730
D0730

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A453497551.664866%
B453406821.504191%
C453522760.608573%
D4534625305.579323%

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 55038 45366 0 0 0.00% 0.00%
B 55038 45358 0 0 0.00% 0.00%
C 55038 45365 0 0 0.00% 0.00%
D 55038 45274 0 0 0.00% 0.00%

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 7 110 2059 11.33 573 536 134.4
A 0 29 2031 11.12 573 536 134.4
A 14 188 1672 8.45 573 536 134.4
B 2 9 1824 12.2 578 551 104.3
B 14 254 1447 8.59 578 551 104.3
B 5 128 1434 8.46 578 551 104.3
C 12 241 1476 6.6 579 536 142.4
C 9 242 1452 6.43 579 536 142.4
C 2 191 1449 6.41 579 536 142.4
D 6 231 1358 7.0 527 484 124.8
D 1 19 1352 6.95 527 484 124.8
D 11 82 1350 6.94 527 484 124.8

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