ASTROSAT CZTI

Data Quality Report

Orbit 15129

Creation date: 2024-06-27T17:04:09.232061
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/AS1G08_046T09_9000002226_15129cztM0_level2.evt modeM0/AS1G08_046T09_9000002226_15129cztM0_level2_quad_clean.evt
Size (bytes)597,813,12098,173,440
Size570.1 MB 93.6 MB
Events in quadrant A3,888,869610,934
Events in quadrant B4,184,615614,462
Events in quadrant C5,695,192593,427
Events in quadrant D3,782,438586,500

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169634
B0174983
C0225333
D0170683

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81612252.757015%
B81612773.394192%
C81613233.957848%
D81611652.021811%

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 9355 8157 0 0 0.00% 0.00%
B 9355 8156 5 5 0.05% 0.06%
C 9355 8156 117 117 1.25% 1.43%
D 9355 8156 5 5 0.05% 0.06%

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 12 189 78892 388.05 987 962 200.8
A 9 143 11615 53.05 987 962 200.8
A 0 226 8782 38.94 987 962 200.8
B 3 64 175682 922.66 990 963 189.4
B 4 48 30741 157.25 990 963 189.4
B 3 209 28951 147.8 990 963 189.4
C 3 233 1838047 8195.3 961 962 224.2
C 3 9 102266 451.92 961 962 224.2
C 7 247 7889 30.9 961 962 224.2
D 2 120 33104 137.36 962 929 234.2
D 2 234 29301 121.12 962 929 234.2
D 8 195 28488 117.65 962 929 234.2

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