ASTROSAT CZTI

Data Quality Report

Orbit 51036

Creation date: 2025-03-06T00:05:57.650038
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/AS1C07_001T02_9000006452_51036cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_51036cztM0_level2_quad_clean.evt
Size (bytes)917,628,480101,502,720
Size875.1 MB 96.8 MB
Events in quadrant A7,977,980707,697
Events in quadrant B9,121,101589,573
Events in quadrant C7,553,239621,680
Events in quadrant D8,706,764605,124

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0293410
B0326040
C0278101
D0314440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78895076.426670%
B7889230129.167195%
C788996712.257574%
D788990611.484345%

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 7889 7889 398 398 5.04% 5.04%
B 7889 7889 1139 1139 14.44% 14.44%
C 7889 7889 906 906 11.48% 11.48%
D 7889 7889 806 806 10.22% 10.22%

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 10 253 2294842 11439.68 817 798 200.5
A 12 3 694251 3458.03 817 798 200.5
A 11 3 241702 1201.31 817 798 200.5
B 12 32 2984309 19557.46 715 689 152.6
B 4 81 823021 5390.34 715 689 152.6
B 3 249 685980 4492.04 715 689 152.6
C 4 5 1030069 4842.11 768 759 212.6
C 12 247 801561 3767.16 768 759 212.6
C 15 147 629363 2957.1 768 759 212.6
D 8 176 3105484 14247.7 780 751 217.9
D 7 126 421546 1931.04 780 751 217.9
D 7 110 280720 1284.78 780 751 217.9

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