ASTROSAT CZTI

Data Quality Report

Orbit 03479

Creation date: 2024-06-27T14:29:34.082632
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_211T01_9000000464_03479cztM0_level2.evt modeM0/AS1G05_211T01_9000000464_03479cztM0_level2_quad_clean.evt
Size (bytes)691,044,48095,143,680
Size659.0 MB 90.7 MB
Events in quadrant A5,232,077570,505
Events in quadrant B4,935,050579,759
Events in quadrant C5,071,627568,851
Events in quadrant D5,080,387537,507

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217873
B0207212
C0214632
D0220852

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A89863874.306699%
B89863573.972847%
C89863674.084131%
D89866036.710438%

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 9031 8988 62 62 0.69% 0.69%
B 9031 8988 29 29 0.32% 0.32%
C 9031 8988 137 137 1.52% 1.52%
D 9031 8988 387 387 4.29% 4.31%

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 0 118 638825 2904.73 1055 1027 219.6
A 0 50 268557 1218.41 1055 1027 219.6
A 15 174 192320 871.21 1055 1027 219.6
B 15 204 295198 1378.71 1077 1046 213.4
B 15 85 182171 848.94 1077 1046 213.4
B 6 205 146170 680.2 1077 1046 213.4
C 7 220 987487 4090.4 1024 1028 241.2
C 8 128 23911 94.89 1024 1028 241.2
C 1 192 10644 39.87 1024 1028 241.2
D 13 46 1149626 4679.65 1005 973 245.5
D 13 239 41564 165.37 1005 973 245.5
D 4 160 40297 160.21 1005 973 245.5

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