ASTROSAT CZTI

Data Quality Report

Orbit 50741

Creation date: 2025-02-14T02:35:03.968406
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/AS1C07_001T01_9000006450_50741cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50741cztM0_level2_quad_clean.evt
Size (bytes)603,080,64088,894,080
Size575.1 MB 84.8 MB
Events in quadrant A5,404,090607,916
Events in quadrant B3,490,283667,156
Events in quadrant C5,514,197567,487
Events in quadrant D7,427,781409,633

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02070862
B01482056
C020974144
D026603165

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62991692.682966%
B62981752.778660%
C62934647.373272%
D6292174727.765416%

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 7401 6303 76 76 1.03% 1.21%
B 7397 6302 60 60 0.81% 0.95%
C 7398 6302 372 372 5.03% 5.90%
D 7397 6293 1620 1620 21.90% 25.74%

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 4 4 2115681 12419.29 678 661 170.3
A 8 38 154618 904.03 678 661 170.3
A 4 3 132729 775.5 678 661 170.3
B 0 171 119414 825.45 679 657 143.9
B 10 247 106200 733.6 679 657 143.9
B 0 172 88650 611.62 679 657 143.9
C 9 38 625896 3503.64 653 647 178.5
C 5 10 539635 3020.27 653 647 178.5
C 12 247 482444 2699.79 653 647 178.5
D 2 216 1664117 10842.95 552 532 153.4
D 2 226 1117518 7280.31 552 532 153.4
D 15 174 886174 5772.46 552 532 153.4

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