ASTROSAT CZTI

Data Quality Report

Orbit 26894

Creation date: 2024-06-27T19:34:10.339334
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/AS1A09_038T17_9000003884_26894cztM0_level2.evt modeM0/AS1A09_038T17_9000003884_26894cztM0_level2_quad_clean.evt
Size (bytes)493,755,840139,599,360
Size470.9 MB 133.1 MB
Events in quadrant A3,645,678934,282
Events in quadrant B3,511,799981,177
Events in quadrant C3,537,452953,857
Events in quadrant D3,827,978916,339

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146890
B0142840
C0142360
D0153400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6350280.440945%
B6350550.866142%
C6350791.244094%
D63501041.637795%

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 7740 6351 4 4 0.05% 0.06%
B 7740 6351 5 5 0.06% 0.08%
C 7740 6351 2 2 0.03% 0.03%
D 7740 6351 79 79 1.02% 1.24%

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 358207 2141.36 852 839 166.9
A 13 254 9780 53.57 852 839 166.9
A 0 226 7130 37.7 852 839 166.9
B 3 64 67676 424.5 866 847 157.4
B 0 190 61145 383.01 866 847 157.4
B 12 111 17951 108.64 866 847 157.4
C 14 238 140487 709.31 861 870 196.8
C 15 208 24541 120.26 861 870 196.8
C 14 176 18821 91.2 861 870 196.8
D 1 52 280511 1435.34 844 827 194.9
D 11 176 228857 1170.25 844 827 194.9
D 2 250 88027 447.51 844 827 194.9

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