ASTROSAT CZTI

Data Quality Report

Orbit 00168

Creation date: 2024-06-27T13:57:21.495148
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/AS1P01_134T01_9000000008_00168cztM0_level2.evt modeM0/AS1P01_134T01_9000000008_00168cztM0_level2_quad_clean.evt
Size (bytes)785,911,68039,366,720
Size749.5 MB 37.5 MB
Events in quadrant A5,916,926215,123
Events in quadrant B6,022,569219,726
Events in quadrant C5,461,066217,662
Events in quadrant D6,091,033211,334

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208822
B0212101
C0195731
D0214401

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4667400.857082%
B4667450.964217%
C466710.021427%
D46671443.085494%

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 6289 4669 191 191 3.04% 4.09%
B 6289 4669 196 196 3.12% 4.20%
C 6289 4669 60 60 0.95% 1.29%
D 6289 4669 373 373 5.93% 7.99%

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 96 97492 291.17 1473 1461 329.8
A 14 171 38761 113.09 1473 1461 329.8
A 14 10 16232 44.79 1473 1461 329.8
B 10 199 172657 495.05 1466 1477 345.8
B 5 216 148265 424.51 1466 1477 345.8
B 8 5 14267 36.99 1466 1477 345.8
C 8 31 44435 112.01 1356 1409 384.1
C 0 186 31449 78.21 1356 1409 384.1
C 0 202 26415 65.1 1356 1409 384.1
D 2 121 556548 1352.3 1330 1372 410.5
D 13 223 108280 260.41 1330 1372 410.5
D 13 89 84983 203.66 1330 1372 410.5

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