ASTROSAT CZTI

Data Quality Report

Orbit 27659

Creation date: 2024-06-27T19:42:41.468430
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_257T01_9000003976_27659cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27659cztM0_level2_quad_clean.evt
Size (bytes)548,285,76092,082,240
Size522.9 MB 87.8 MB
Events in quadrant A3,477,932617,022
Events in quadrant B3,231,310632,955
Events in quadrant C3,342,926592,786
Events in quadrant D6,127,632507,799

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144660
B0135750
C0138510
D0225110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6267620.989309%
B6268430.686024%
C62681051.675175%
D6267101316.164034%

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 7467 6267 16 16 0.21% 0.26%
B 7468 6268 1 1 0.01% 0.02%
C 7468 6268 31 31 0.42% 0.49%
D 7467 6267 767 767 10.27% 12.24%

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 6 16 359574 2233.0 804 789 160.7
A 13 254 11326 65.58 804 789 160.7
A 13 248 9131 51.92 804 789 160.7
B 0 230 43048 282.8 800 781 149.5
B 3 209 18874 121.06 800 781 149.5
B 12 111 17531 112.07 800 781 149.5
C 2 16 210961 1168.4 769 774 179.9
C 14 238 123682 683.23 769 774 179.9
C 3 233 12963 67.76 769 774 179.9
D 1 52 3102888 18221.59 718 698 170.2
D 2 250 116377 679.47 718 698 170.2
D 7 80 113635 663.37 718 698 170.2

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