ASTROSAT CZTI

Data Quality Report

Orbit 28641

Creation date: 2024-06-27T19:54:20.435661
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_045T07_9000004110_28641cztM0_level2.evt modeM0/AS1A10_045T07_9000004110_28641cztM0_level2_quad_clean.evt
Size (bytes)1,130,330,880180,072,000
Size1.1 GB 171.7 MB
Events in quadrant A7,196,7291,122,718
Events in quadrant B7,866,4191,138,040
Events in quadrant C7,099,5631,103,410
Events in quadrant D11,073,5121,071,894

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03000
B03000
C03000
D03000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0309563
B0328663
C0304873
D0429273

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A147431380.936037%
B147432871.946687%
C147442271.539609%
D147446274.252577%

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 17328 14746 37 37 0.21% 0.25%
B 17328 14746 109 109 0.63% 0.74%
C 17329 14747 0 0 0.00% 0.00%
D 17329 14747 474 474 2.74% 3.21%

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 15 174 179347 490.29 1804 1765 362.2
A 15 47 43729 115.86 1804 1765 362.2
A 13 254 25247 64.83 1804 1765 362.2
B 10 245 775306 2250.96 1780 1733 343.7
B 10 246 57422 162.05 1780 1733 343.7
B 12 111 43020 120.14 1780 1733 343.7
C 14 238 308508 760.44 1727 1736 403.4
C 14 254 47703 113.94 1727 1736 403.4
C 13 61 11895 25.18 1727 1736 403.4
D 1 52 3086800 7523.25 1723 1677 410.1
D 8 195 922195 2244.74 1723 1677 410.1
D 12 233 316837 768.54 1723 1677 410.1

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