ASTROSAT CZTI

Data Quality Report

Orbit 09941

Creation date: 2024-06-27T15:52:42.224705
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/AS1G07_016T01_9000001420_09941cztM0_level2.evt modeM0/AS1G07_016T01_9000001420_09941cztM0_level2_quad_clean.evt
Size (bytes)466,300,80082,560,960
Size444.7 MB 78.7 MB
Events in quadrant A3,324,541529,009
Events in quadrant B3,304,439531,051
Events in quadrant C2,709,339524,425
Events in quadrant D4,371,853492,169

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139222
B0137891
C0123631
D0170031

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60611041.715888%
B60611352.227355%
C6061280.461970%
D60611332.194357%

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 7246 6061 26 26 0.36% 0.43%
B 7246 6061 58 58 0.80% 0.96%
C 7246 6061 0 0 0.00% 0.00%
D 7246 6061 110 110 1.52% 1.81%

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 15 239 522827 3550.46 718 704 147.1
A 8 15 18287 119.57 718 704 147.1
A 15 174 13293 85.61 718 704 147.1
B 4 81 366013 2663.07 721 705 137.2
B 4 239 43766 313.91 721 705 137.2
B 0 219 28511 202.7 721 705 137.2
C 7 247 6858 38.41 690 693 160.5
C 12 4 5440 29.57 690 693 160.5
C 13 61 5294 28.66 690 693 160.5
D 8 195 541820 3009.04 678 661 179.8
D 2 16 362142 2009.97 678 661 179.8
D 12 233 289740 1607.38 678 661 179.8

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