ASTROSAT CZTI

Data Quality Report

Orbit 35769

Creation date: 2022-07-18T22:12:37.280576
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_058T14_9000005134_35769cztM0_level2.evt modeM0/AS1A10_058T14_9000005134_35769cztM0_level2_quad_clean.evt
Size (bytes)413,801,28096,621,120
Size394.6 MB 92.1 MB
Events in quadrant A2,668,965668,284
Events in quadrant B3,016,364664,497
Events in quadrant C2,799,964636,130
Events in quadrant D3,710,611610,094

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109243
B0119712
C0112402
D0142392

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A495470.141300%
B4954841.695600%
C4954480.968914%
D49551563.148335%

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 7077 4955 0 0 0.00% 0.00%
B 7077 4955 56 56 0.79% 1.13%
C 7077 4955 42 42 0.59% 0.85%
D 7078 4956 199 199 2.81% 4.02%

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 151867 1173.73 641 632 128.8
A 15 169 28147 213.54 641 632 128.8
A 13 6 7679 54.69 641 632 128.8
B 5 172 234304 1997.13 624 613 117.0
B 5 255 190716 1624.63 624 613 117.0
B 4 232 27691 231.41 624 613 117.0
C 15 214 209450 1513.07 599 605 138.0
C 0 10 136265 982.85 599 605 138.0
C 9 187 59615 427.52 599 605 138.0
D 1 52 865586 5869.17 607 592 147.4
D 13 249 146899 992.73 607 592 147.4
D 8 195 90863 612.51 607 592 147.4

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