ASTROSAT CZTI

Data Quality Report

Orbit 20181114_T03_013T01_9000002514_level2

Creation date: 2025-11-25T21:11:30.187019
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/AS1T03_013T01_9000002514cztM0_level2.fits modeM0/AS1T03_013T01_9000002514cztM0_level2_quad_clean.evt
Size (bytes)475,283,520442,774,080
Size453.3 MB 422.3 MB
Events in quadrant A2,920,1422,627,459
Events in quadrant B2,865,9662,692,559
Events in quadrant C2,872,3662,529,787
Events in quadrant D2,243,0322,070,938

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01366660
B01066070
C01260830
D01869250

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0950
C0950
D0950

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010340
B010340
C010340
D010340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5082827155.341544%
B508285030.989612%
C5082811102.183836%
D50828923618.171087%

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 64790 50765 0 0 0.00% 0.00%
B 64790 50828 0 0 0.00% 0.00%
C 64790 50827 0 0 0.00% 0.00%
D 64787 49923 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 0 29 2833 11.15 761 715 189.9
A 7 110 2385 8.79 761 715 189.9
A 0 30 2241 8.03 761 715 189.9
B 2 9 2312 10.69 757 724 148.6
B 2 8 1969 8.38 757 724 148.6
B 3 17 1900 7.91 757 724 148.6
C 12 241 2034 6.79 758 710 195.0
C 9 233 1942 6.32 758 710 195.0
C 2 191 1919 6.2 758 710 195.0
D 6 231 1676 6.45 639 585 169.1
D 10 189 1637 6.22 639 585 169.1
D 7 3 1602 6.01 639 585 169.1

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