ASTROSAT CZTI

Data Quality Report

Orbit 11055

Creation date: 2024-06-27T16:07:37.193399
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/AS1C03_006T01_9000001608_11055cztM0_level2.evt modeM0/AS1C03_006T01_9000001608_11055cztM0_level2_quad_clean.evt
Size (bytes)578,977,92077,371,200
Size552.2 MB 73.8 MB
Events in quadrant A5,123,076467,104
Events in quadrant B4,533,653480,470
Events in quadrant C2,996,351481,039
Events in quadrant D4,435,026454,594

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196763
B0177282
C0133892
D0175202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65953445.216073%
B65952924.427597%
C6595130.197119%
D65952904.397271%

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 7735 6596 276 276 3.57% 4.18%
B 7735 6596 190 190 2.46% 2.88%
C 7735 6596 0 0 0.00% 0.00%
D 7735 6596 237 237 3.06% 3.59%

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 14 238 2014359 12685.84 775 758 158.7
A 15 174 91573 572.14 775 758 158.7
A 1 162 15558 93.24 775 758 158.7
B 4 239 1349983 9040.46 785 767 149.2
B 0 214 44623 293.86 785 767 149.2
B 0 197 30142 196.83 785 767 149.2
C 13 61 5774 28.08 766 772 178.2
C 9 54 4783 22.51 766 772 178.2
C 12 4 2177 7.89 766 772 178.2
D 10 253 556312 3113.22 741 723 178.5
D 1 52 523823 2931.17 741 723 178.5
D 11 129 231873 1295.24 741 723 178.5

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