ASTROSAT CZTI

Data Quality Report

Orbit 47878

Creation date: 2024-08-05T05:06:09.737263
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_053T01_9000006370_47878cztM0_level2.fits modeM0/AS1A13_053T01_9000006370_47878cztM0_level2_quad_clean.evt
Size (bytes)510,949,440104,843,520
Size487.3 MB 100.0 MB
Events in quadrant A6,787,664687,394
Events in quadrant B3,109,327727,174
Events in quadrant C2,854,592703,535
Events in quadrant D5,647,209593,593

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244134
B0140852
C0135112
D0214222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66383144.730340%
B6638731.099729%
C6638190.286231%
D66386399.626393%

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 7678 6639 121 121 1.58% 1.82%
B 7678 6639 27 27 0.35% 0.41%
C 7678 6639 10 10 0.13% 0.15%
D 7678 6639 563 563 7.33% 8.48%

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 3980067 26677.16 715 697 149.2
A 13 248 22725 147.67 715 697 149.2
A 0 31 18252 117.69 715 697 149.2
B 5 255 213323 1505.71 721 701 141.2
B 12 111 18370 125.13 721 701 141.2
B 11 111 16674 113.12 721 701 141.2
C 14 254 41849 242.54 715 718 169.6
C 5 4 18402 104.28 715 718 169.6
C 13 61 4697 23.46 715 718 169.6
D 2 37 1452749 8410.24 682 661 172.7
D 2 165 589675 3411.47 682 661 172.7
D 6 239 553671 3202.94 682 661 172.7

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