ASTROSAT CZTI

Data Quality Report

Orbit 08497

Creation date: 2024-06-27T15:33:30.987634
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_060T01_9000001200_08497cztM0_level2.evt modeM0/AS1G07_060T01_9000001200_08497cztM0_level2_quad_clean.evt
Size (bytes)413,072,64072,702,720
Size393.9 MB 69.3 MB
Events in quadrant A2,915,007449,211
Events in quadrant B3,132,940451,763
Events in quadrant C2,840,632441,274
Events in quadrant D3,199,109425,718

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127385
B0132242
C0126864
D0133972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6200210.338710%
B6201831.338494%
C6200120.193548%
D620190.145138%

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 7481 6202 2 2 0.03% 0.03%
B 7481 6202 25 25 0.33% 0.40%
C 7481 6202 0 0 0.00% 0.00%
D 7481 6202 1 1 0.01% 0.02%

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 5 16 18684 116.73 752 737 153.7
A 0 226 7006 40.78 752 737 153.7
A 12 194 6587 38.05 752 737 153.7
B 4 173 129818 904.34 753 737 142.7
B 0 214 60439 418.27 753 737 142.7
B 12 111 16031 107.15 753 737 142.7
C 13 61 5536 28.79 726 731 166.9
C 12 4 4892 24.93 726 731 166.9
C 8 222 3348 15.68 726 731 166.9
D 1 52 385613 2246.75 718 702 171.3
D 8 195 38986 223.47 718 702 171.3
D 2 234 17914 100.47 718 702 171.3

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