ASTROSAT CZTI

Data Quality Report

Orbit 28461

Creation date: 2024-06-27T19:51:59.549844
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_101T21_9000004090_28461cztM0_level2.evt modeM0/AS1A10_101T21_9000004090_28461cztM0_level2_quad_clean.evt
Size (bytes)526,492,800138,205,440
Size502.1 MB 131.8 MB
Events in quadrant A3,386,198934,923
Events in quadrant B3,579,032954,222
Events in quadrant C3,378,549922,377
Events in quadrant D5,111,781872,646

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149750
B0153480
C0148020
D0201660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7209260.360660%
B7209600.832293%
C7209700.971008%
D72093995.534748%

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 7874 7210 5 5 0.06% 0.07%
B 7874 7210 16 16 0.20% 0.22%
C 7874 7210 0 0 0.00% 0.00%
D 7874 7210 298 298 3.78% 4.13%

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 15 174 41208 235.99 852 834 171.1
A 15 169 29081 165.11 852 834 171.1
A 12 96 26805 151.8 852 834 171.1
B 10 245 178774 1111.57 848 825 160.1
B 0 230 26370 159.57 848 825 160.1
B 5 255 24539 148.13 848 825 160.1
C 14 238 134798 694.12 827 832 193.0
C 3 233 15229 74.59 827 832 193.0
C 13 61 5643 24.92 827 832 193.0
D 1 52 1131146 5916.35 807 788 191.1
D 8 195 384915 2010.54 807 788 191.1
D 13 104 175434 914.1 807 788 191.1

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