ASTROSAT CZTI

Data Quality Report

Orbit 27961

Creation date: 2024-06-27T19:46:28.620749
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/AS1A10_021T03_9000004038_27961cztM0_level2.evt modeM0/AS1A10_021T03_9000004038_27961cztM0_level2_quad_clean.evt
Size (bytes)518,711,04094,590,720
Size494.7 MB 90.2 MB
Events in quadrant A3,201,517613,298
Events in quadrant B3,336,460622,277
Events in quadrant C3,255,283599,043
Events in quadrant D5,471,215572,773

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134730
B0138610
C0135990
D0206600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6550410.625954%
B6550480.732824%
C6551640.976950%
D65515167.876660%

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 7610 6550 0 0 0.00% 0.00%
B 7610 6550 1 1 0.01% 0.02%
C 7611 6551 0 0 0.00% 0.00%
D 7611 6551 409 409 5.37% 6.24%

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 13 254 11138 62.57 828 811 165.0
A 3 137 7664 41.52 828 811 165.0
A 0 226 7113 38.18 828 811 165.0
B 10 245 95684 609.94 819 800 155.6
B 12 111 19127 117.81 819 800 155.6
B 11 111 17163 105.19 819 800 155.6
C 14 238 126970 675.5 795 801 186.8
C 2 16 16792 85.62 795 801 186.8
C 3 233 10397 51.38 795 801 186.8
D 1 52 1861843 10137.83 778 759 183.6
D 7 80 398095 2164.4 778 759 183.6
D 8 195 121205 656.1 778 759 183.6

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