ASTROSAT CZTI

Data Quality Report

Orbit 29256

Creation date: 2024-06-27T20:01:57.911499
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/AS1A10_045T08_9000004208_29256cztM0_level2.evt modeM0/AS1A10_045T08_9000004208_29256cztM0_level2_quad_clean.evt
Size (bytes)795,263,04076,282,560
Size758.4 MB 72.7 MB
Events in quadrant A3,423,907480,771
Events in quadrant B4,699,504487,172
Events in quadrant C11,081,357416,411
Events in quadrant D4,435,187465,588

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142172
B0182622
C0375052
D0175852

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65881031.563449%
B65874396.664642%
C6587294444.694094%
D65872063.127372%

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 7608 6589 0 0 0.00% 0.00%
B 7607 6588 141 141 1.85% 2.14%
C 7607 6588 1784 1784 23.45% 27.08%
D 7607 6588 91 91 1.20% 1.38%

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 13 15989 85.58 882 866 176.7
A 13 254 12712 67.03 882 866 176.7
A 3 137 8443 42.88 882 866 176.7
B 10 247 637908 3921.02 859 838 162.5
B 0 183 302806 1858.54 859 838 162.5
B 5 255 184294 1129.13 859 838 162.5
C 3 233 7949020 45854.85 749 757 173.3
C 14 238 150284 862.65 749 757 173.3
C 14 254 48500 275.44 749 757 173.3
D 1 52 792803 3545.39 848 835 223.4
D 8 195 226677 1011.02 848 835 223.4
D 13 153 79352 351.5 848 835 223.4

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