ASTROSAT CZTI

Data Quality Report

Orbit 10960

Creation date: 2024-06-27T16:06:16.865651
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/AS1T01_193T01_9000001590_10960cztM0_level2.evt modeM0/AS1T01_193T01_9000001590_10960cztM0_level2_quad_clean.evt
Size (bytes)523,074,24098,919,360
Size498.8 MB 94.3 MB
Events in quadrant A4,409,589645,303
Events in quadrant B3,531,960664,128
Events in quadrant C2,734,193669,077
Events in quadrant D4,748,055587,484

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013610
B013612
C01357
D013612

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189591678
B0160781572
C0137361176
D0209062533

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A051
B051
C050
D051

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61372894.709141%
B61521903.088427%
C6208220.354381%
D608180313.205065%

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 7240 6381 186 186 2.57% 2.91%
B 7240 6401 97 97 1.34% 1.52%
C 7240 6449 0 0 0.00% 0.00%
D 7240 6322 640 640 8.84% 10.12%

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 8 5 1643547 11431.0 699 686 143.7
A 8 15 52559 360.93 699 686 143.7
A 11 29 11144 72.77 699 686 143.7
B 4 239 580611 4333.67 708 690 133.8
B 4 173 67159 496.71 708 690 133.8
B 0 214 41630 305.94 708 690 133.8
C 13 61 5194 27.71 700 703 162.1
C 8 222 2213 9.32 700 703 162.1
C 5 207 1890 7.32 700 703 162.1
D 10 253 1653862 10899.49 628 610 151.7
D 1 52 403086 2653.43 628 610 151.7
D 14 34 111376 730.25 628 610 151.7

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