ASTROSAT CZTI

Data Quality Report

Orbit 26259

Creation date: 2024-06-27T19:26:42.567242
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/AS1A09_079T03_9000003790_26259cztM0_level2.evt modeM0/AS1A09_079T03_9000003790_26259cztM0_level2_quad_clean.evt
Size (bytes)471,352,32079,902,720
Size449.5 MB 76.2 MB
Events in quadrant A2,975,543515,457
Events in quadrant B2,927,374534,268
Events in quadrant C4,946,455454,758
Events in quadrant D3,022,759500,565

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126610
B0124800
C0185770
D0132660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5930370.623946%
B5931370.623841%
C593180313.539032%
D5931330.556399%

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 7125 5931 4 4 0.06% 0.07%
B 7126 5932 1 1 0.01% 0.02%
C 7126 5932 717 717 10.06% 12.09%
D 7126 5932 17 17 0.24% 0.29%

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 149187 1021.04 724 711 145.4
A 12 16 25712 171.93 724 711 145.4
A 13 254 9188 58.29 724 711 145.4
B 0 245 21844 154.55 727 708 136.8
B 5 172 19882 140.21 727 708 136.8
B 0 230 16762 117.39 727 708 136.8
C 2 16 2247489 14796.92 654 657 151.8
C 14 238 105960 693.49 654 657 151.8
C 3 233 30021 193.38 654 657 151.8
D 1 52 246316 1465.96 699 681 167.6
D 13 168 86669 513.18 699 681 167.6
D 12 233 26664 155.07 699 681 167.6

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