ASTROSAT CZTI

Data Quality Report

Orbit 33317

Creation date: 2024-06-27T20:47:29.893507
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/AS1T04_071T01_9000004782_33317cztM0_level2.evt modeM0/AS1T04_071T01_9000004782_33317cztM0_level2_quad_clean.evt
Size (bytes)580,472,64056,393,280
Size553.6 MB 53.8 MB
Events in quadrant A2,806,087354,433
Events in quadrant B5,161,884292,557
Events in quadrant C4,365,480343,725
Events in quadrant D4,872,619329,675

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117533
B0189592
C0166052
D0183442

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5521370.670168%
B5521115420.902011%
C55212394.328926%
D55211392.517660%

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 7164 5522 19 19 0.27% 0.34%
B 7164 5522 751 751 10.48% 13.60%
C 7164 5522 193 193 2.69% 3.50%
D 7164 5522 121 121 1.69% 2.19%

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 15 169 204224 1507.88 667 653 135.0
A 15 174 14799 104.78 667 653 135.0
A 13 6 10235 70.98 667 653 135.0
B 0 219 1441668 12205.93 608 591 118.1
B 5 172 1124883 9522.76 608 591 118.1
B 5 200 93294 785.2 608 591 118.1
C 10 49 1102774 7520.28 633 638 146.6
C 1 23 387738 2641.33 633 638 146.6
C 15 214 254544 1732.49 633 638 146.6
D 8 195 1691491 9935.34 630 616 170.2
D 13 249 309645 1815.81 630 616 170.2
D 2 250 273820 1605.31 630 616 170.2

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