ASTROSAT CZTI

Data Quality Report

Orbit 37241

Creation date: 2024-06-27T21:37:20.044410
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_123T11_9000005286_37241cztM0_level2.evt modeM0/AS1A10_123T11_9000005286_37241cztM0_level2_quad_clean.evt
Size (bytes)469,103,04057,666,240
Size447.4 MB 55.0 MB
Events in quadrant A3,815,011337,319
Events in quadrant B3,186,958350,563
Events in quadrant C2,844,829347,432
Events in quadrant D3,987,571326,484

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147483
B0130042
C0117092
D0155742

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54844428.059810%
B5484681.239971%
C5484490.893508%
D54843877.056893%

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 7186 5485 337 337 4.69% 6.14%
B 7186 5485 40 40 0.56% 0.73%
C 7186 5485 36 36 0.50% 0.66%
D 7186 5485 307 307 4.27% 5.60%

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 15 237 778697 6212.23 609 597 125.3
A 9 143 400774 3194.95 609 597 125.3
A 10 83 242314 1929.83 609 597 125.3
B 0 190 156787 1283.14 633 615 121.7
B 0 155 149898 1226.54 633 615 121.7
B 5 172 125232 1023.88 633 615 121.7
C 15 214 230043 1588.14 617 622 144.5
C 14 254 101563 698.75 617 622 144.5
C 0 10 76955 528.41 617 622 144.5
D 2 249 830734 5569.57 602 585 149.1
D 10 253 369486 2475.0 602 585 149.1
D 13 249 100296 668.97 602 585 149.1

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