ASTROSAT CZTI

Data Quality Report

Orbit 04498

Creation date: 2024-06-27T14:42:56.292611
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/AS1G05_173T01_9000000564_04498cztM0_level2.evt modeM0/AS1G05_173T01_9000000564_04498cztM0_level2_quad_clean.evt
Size (bytes)434,232,00059,921,280
Size414.1 MB 57.1 MB
Events in quadrant A3,341,145340,070
Events in quadrant B3,059,466345,308
Events in quadrant C3,051,268342,430
Events in quadrant D3,254,209330,215

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143533
B0134982
C0136462
D0144782

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6542650.993580%
B6542340.519719%
C6542410.626720%
D65421101.681443%

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 7667 6543 38 38 0.50% 0.58%
B 7667 6543 0 0 0.00% 0.00%
C 7667 6543 22 22 0.29% 0.34%
D 7667 6543 65 65 0.85% 0.99%

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 393316 2558.97 755 739 153.4
A 7 16 27852 176.73 755 739 153.4
A 0 50 8625 51.4 755 739 153.4
B 15 204 32360 216.47 766 749 146.0
B 4 80 29001 193.47 766 749 146.0
B 12 111 12860 82.94 766 749 146.0
C 9 247 124454 724.97 735 737 170.7
C 14 67 27656 157.74 735 737 170.7
C 9 54 15884 88.76 735 737 170.7
D 13 235 326451 1903.86 724 705 171.1
D 9 35 60942 352.06 724 705 171.1
D 2 136 55488 320.19 724 705 171.1

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