ASTROSAT CZTI

Data Quality Report

Orbit 37724

Creation date: 2024-06-27T21:43:38.340995
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/AS1A11_106T02_9000005344_37724cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37724cztM0_level2_quad_clean.evt
Size (bytes)624,700,80053,789,760
Size595.8 MB 51.3 MB
Events in quadrant A7,480,696301,516
Events in quadrant B3,078,570319,797
Events in quadrant C2,871,387329,678
Events in quadrant D5,137,581313,547

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258723
B0124212
C0113762
D0187862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5190150629.017341%
B5190981.888247%
C5190300.578035%
D519077014.836224%

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 7312 5191 1411 1411 19.30% 27.18%
B 7311 5189 79 79 1.08% 1.52%
C 7311 5189 23 23 0.31% 0.44%
D 7311 5189 760 760 10.40% 14.65%

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 15 222 4707001 38590.36 607 597 122.0
A 10 83 327941 2684.07 607 597 122.0
A 9 143 54704 443.65 607 597 122.0
B 5 172 232852 1951.17 636 620 119.0
B 0 189 107836 900.81 636 620 119.0
B 5 255 72538 604.24 636 620 119.0
C 15 214 220695 1521.42 634 642 144.6
C 0 10 132613 912.43 634 642 144.6
C 15 159 28396 191.89 634 642 144.6
D 2 249 1061984 7364.2 597 583 144.1
D 12 227 869967 6031.95 597 583 144.1
D 12 233 327629 2269.11 597 583 144.1

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