ASTROSAT CZTI

Data Quality Report

Orbit 46752

Creation date: 2024-06-27T23:27:12.487193
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/AS1A13_092T17_9000006262_46752cztM0_level2.fits modeM0/AS1A13_092T17_9000006262_46752cztM0_level2_quad_clean.evt
Size (bytes)514,552,320110,436,480
Size490.7 MB 105.3 MB
Events in quadrant A6,933,618711,711
Events in quadrant B3,905,337756,177
Events in quadrant C3,309,255742,634
Events in quadrant D4,362,323651,946

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250712
B0163194
C0149013
D0180232

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69164236.116252%
B69162273.282244%
C6916650.939850%
D69163384.887218%

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 8966 6917 86 86 0.96% 1.24%
B 8967 6918 35 35 0.39% 0.51%
C 8966 6918 14 14 0.16% 0.20%
D 8966 6918 285 285 3.18% 4.12%

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 10 83 3612593 22180.28 776 758 162.8
A 9 191 152624 932.61 776 758 162.8
A 3 7 59852 362.9 776 758 162.8
B 3 112 300930 1910.68 788 761 157.1
B 0 198 106608 673.75 788 761 157.1
B 0 190 76605 482.77 788 761 157.1
C 12 2 122120 658.43 777 782 184.3
C 3 233 82811 445.12 777 782 184.3
C 14 254 72295 388.06 777 782 184.3
D 13 249 998839 5200.8 757 734 191.9
D 1 52 117158 606.65 757 734 191.9
D 13 138 105500 545.9 757 734 191.9

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