ASTROSAT CZTI

Data Quality Report

Orbit 28546

Creation date: 2024-06-27T19:53:10.968665
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_102T07_9000004102_28546cztM0_level2.evt modeM0/AS1A10_102T07_9000004102_28546cztM0_level2_quad_clean.evt
Size (bytes)578,937,60094,521,600
Size552.1 MB 90.1 MB
Events in quadrant A3,624,922637,074
Events in quadrant B3,412,172640,201
Events in quadrant C3,406,546593,120
Events in quadrant D6,651,021540,271

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147602
B0141721
C0139691
D0242471

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64701442.225657%
B64711542.379849%
C64711281.978056%
D647184012.980992%

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 7610 6470 30 30 0.39% 0.46%
B 7611 6471 3 3 0.04% 0.05%
C 7611 6471 1 1 0.01% 0.02%
D 7611 6471 825 825 10.84% 12.75%

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 15 174 337193 1981.65 847 833 169.7
A 13 254 13452 74.34 847 833 169.7
A 5 168 10933 59.5 847 833 169.7
B 10 245 90913 564.05 835 817 159.7
B 0 230 29633 180.4 835 817 159.7
B 12 111 19120 114.58 835 817 159.7
C 7 247 140099 748.94 793 799 186.0
C 14 238 133928 715.76 793 799 186.0
C 3 233 35489 186.51 793 799 186.0
D 1 52 2528960 13822.73 775 757 182.9
D 8 195 868853 4746.24 775 757 182.9
D 2 250 211690 1153.26 775 757 182.9

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