ASTROSAT CZTI

Data Quality Report

Orbit 04741

Creation date: 2024-06-27T14:46:30.228987
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/AS1G05_207T01_9000000596_04741cztM0_level2.evt modeM0/AS1G05_207T01_9000000596_04741cztM0_level2_quad_clean.evt
Size (bytes)1,478,776,320177,721,920
Size1.4 GB 169.5 MB
Events in quadrant A8,062,7261,067,509
Events in quadrant B9,299,6661,080,754
Events in quadrant C16,701,021982,445
Events in quadrant D9,503,9921,007,440

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0367034
B0394453
C0614203
D0413953

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03680
B03680
C03680
D03680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A180312411.336587%
B180312911.613887%
C18031238513.227220%
D180315443.017026%

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 19696 18034 0 0 0.00% 0.00%
B 19696 18033 27 27 0.14% 0.15%
C 19696 18034 1891 1891 9.60% 10.49%
D 19696 18034 325 325 1.65% 1.80%

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 7 16 48415 108.85 2081 2033 426.1
A 0 226 20427 43.17 2081 2033 426.1
A 12 194 20215 42.67 2081 2033 426.1
B 14 167 851546 2087.66 2100 2044 406.9
B 4 80 231040 562.76 2100 2044 406.9
B 15 204 100806 242.71 2100 2044 406.9
C 14 48 8963481 20083.87 1917 1925 446.2
C 8 208 174667 387.13 1917 1925 446.2
C 12 4 28167 58.81 1917 1925 446.2
D 13 53 776130 1613.12 1990 1927 479.9
D 1 31 348682 722.5 1990 1927 479.9
D 13 239 286021 591.94 1990 1927 479.9

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