ASTROSAT CZTI

Data Quality Report

Orbit 31325

Creation date: 2024-06-27T20:26:44.512499
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/AS1T04_025T01_9000004538_31325cztM0_level2.evt modeM0/AS1T04_025T01_9000004538_31325cztM0_level2_quad_clean.evt
Size (bytes)522,120,960136,681,920
Size497.9 MB 130.4 MB
Events in quadrant A3,181,062963,081
Events in quadrant B5,037,264932,837
Events in quadrant C3,330,007905,846
Events in quadrant D3,846,671908,007

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130461
B0193351
C0136491
D0154381

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61581081.753816%
B61581963.182852%
C61582133.458915%
D61581832.971744%

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 7413 6159 0 0 0.00% 0.00%
B 7413 6159 10 10 0.13% 0.16%
C 7413 6159 20 20 0.27% 0.32%
D 7413 6159 76 76 1.03% 1.23%

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 11194 63.89 824 809 162.5
A 3 137 7642 42.04 824 809 162.5
A 0 226 7163 39.09 824 809 162.5
B 6 159 1631526 10985.51 790 772 148.4
B 4 80 183516 1231.05 790 772 148.4
B 0 190 67672 450.67 790 772 148.4
C 14 238 130883 739.63 767 774 175.9
C 0 10 100590 567.42 767 774 175.9
C 3 233 83684 471.32 767 774 175.9
D 12 233 383353 2068.94 797 778 184.9
D 8 195 363130 1959.58 797 778 184.9
D 2 250 70052 374.63 797 778 184.9

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