ASTROSAT CZTI

Data Quality Report

Orbit 42909

Creation date: 2024-06-27T22:45:41.344337
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/AS1T05_143T01_9000005830_42909cztM0_level2.fits modeM0/AS1T05_143T01_9000005830_42909cztM0_level2_quad_clean.evt
Size (bytes)344,001,60085,512,960
Size328.1 MB 81.6 MB
Events in quadrant A3,120,504587,509
Events in quadrant B2,179,970604,076
Events in quadrant C2,649,170578,105
Events in quadrant D4,406,621479,433

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123962
B098162
C0109252
D0164532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4846841.733388%
B4846100.206356%
C4846200.412712%
D484659812.340074%

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 6939 4847 65 65 0.94% 1.34%
B 6939 4847 3 3 0.04% 0.06%
C 6939 4847 18 18 0.26% 0.37%
D 6939 4846 574 574 8.27% 11.84%

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 560657 5067.31 538 527 110.5
A 15 237 402771 3638.97 538 527 110.5
A 2 79 51931 465.03 538 527 110.5
B 0 229 12517 117.21 542 527 102.3
B 12 111 12330 115.38 542 527 102.3
B 11 111 11203 104.37 542 527 102.3
C 14 254 237356 1888.49 538 540 125.4
C 15 214 197143 1567.81 538 540 125.4
C 8 79 62010 490.19 538 540 125.4
D 12 6 583129 4767.45 508 495 122.2
D 10 118 467269 3819.41 508 495 122.2
D 1 47 396591 3241.09 508 495 122.2

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