ASTROSAT CZTI

Data Quality Report

Orbit 30149

Creation date: 2024-06-27T20:11:30.646691
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_097T03_9000004336_30149cztM0_level2.evt modeM0/AS1A10_097T03_9000004336_30149cztM0_level2_quad_clean.evt
Size (bytes)566,729,280107,101,440
Size540.5 MB 102.1 MB
Events in quadrant A3,318,280711,114
Events in quadrant B5,187,977715,197
Events in quadrant C4,425,959682,330
Events in quadrant D3,800,391690,800

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139422
B0196582
C0176412
D0155092

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6371460.722022%
B6371911.428347%
C63714627.251609%
D6370380.596546%

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 7561 6372 3 3 0.04% 0.05%
B 7561 6372 1 1 0.01% 0.02%
C 7561 6372 25 25 0.33% 0.39%
D 7560 6371 12 12 0.16% 0.19%

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 77965 464.13 833 818 166.2
A 8 192 26055 151.83 833 818 166.2
A 13 254 11726 65.62 833 818 166.2
B 6 159 1890651 12114.45 828 808 156.0
B 0 190 34092 213.36 828 808 156.0
B 12 111 18680 114.56 828 808 156.0
C 3 233 874139 4697.87 799 806 185.9
C 14 238 232257 1245.03 799 806 185.9
C 14 254 142149 760.32 799 806 185.9
D 12 227 390001 1922.96 816 800 202.4
D 8 195 150593 740.09 816 800 202.4
D 7 1 42478 205.92 816 800 202.4

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