ASTROSAT CZTI

Data Quality Report

Orbit 25567

Creation date: 2024-06-27T19:19:06.724650
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/AS1A09_043T02_9000003726_25567cztM0_level2.evt modeM0/AS1A09_043T02_9000003726_25567cztM0_level2_quad_clean.evt
Size (bytes)567,642,240101,871,360
Size541.3 MB 97.2 MB
Events in quadrant A3,621,361664,600
Events in quadrant B3,840,429667,342
Events in quadrant C3,894,765630,516
Events in quadrant D5,338,147613,096

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153550
B0157890
C0161500
D0208820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73202233.046448%
B73202423.306011%
C73202573.510929%
D73203474.740437%

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 7470 7322 0 0 0.00% 0.00%
B 7470 7322 0 0 0.00% 0.00%
C 7470 7322 12 12 0.16% 0.16%
D 7470 7322 130 130 1.74% 1.78%

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 12472 60.26 937 918 191.7
A 3 137 8827 41.25 937 918 191.7
A 0 226 8329 38.65 937 918 191.7
B 0 219 123763 684.94 924 900 179.4
B 12 111 21952 117.36 924 900 179.4
B 0 190 21399 114.28 924 900 179.4
C 3 233 164211 775.12 886 891 210.7
C 14 238 137745 649.52 886 891 210.7
C 0 207 132636 625.27 886 891 210.7
D 1 52 957469 4249.13 903 875 225.1
D 8 195 595574 2641.61 903 875 225.1
D 7 38 202265 894.56 903 875 225.1

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