ASTROSAT CZTI

Data Quality Report

Orbit 36740

Creation date: 2024-06-27T21:31:02.289797
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_101T01_9000005238_36740cztM0_level2.evt modeM0/AS1A11_101T01_9000005238_36740cztM0_level2_quad_clean.evt
Size (bytes)674,867,520119,154,240
Size643.6 MB 113.6 MB
Events in quadrant A4,500,930755,681
Events in quadrant B4,790,096781,760
Events in quadrant C5,529,100730,705
Events in quadrant D5,004,166711,567

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190204
B0200103
C0219793
D0209163

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01820
B01820
C01820
D01820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9068100.110278%
B90681391.532863%
C90682933.231142%
D90681421.565946%

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 19611 9070 1 1 0.01% 0.01%
B 19611 9070 67 67 0.34% 0.74%
C 19611 9070 235 235 1.20% 2.59%
D 19611 9070 115 115 0.59% 1.27%

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 10 83 341281 1610.86 1064 1048 211.2
A 9 143 26467 120.35 1064 1048 211.2
A 13 254 14338 62.92 1064 1048 211.2
B 5 200 210683 1059.22 1058 1034 197.9
B 5 255 95507 477.31 1058 1034 197.9
B 0 213 88925 444.06 1058 1034 197.9
C 14 254 599029 2541.93 1012 1019 235.3
C 0 10 582399 2471.24 1012 1019 235.3
C 15 214 373602 1583.72 1012 1019 235.3
D 12 227 212307 861.45 1022 1000 245.3
D 2 250 198266 804.21 1022 1000 245.3
D 13 249 187558 760.55 1022 1000 245.3

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