ASTROSAT CZTI

Data Quality Report

Orbit 04731

Creation date: 2024-06-27T14:46:09.133538
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/AS1G05_192T01_9000000594_04731cztM0_level2.evt modeM0/AS1G05_192T01_9000000594_04731cztM0_level2_quad_clean.evt
Size (bytes)594,426,24084,381,120
Size566.9 MB 80.5 MB
Events in quadrant A2,884,557576,368
Events in quadrant B3,226,177579,775
Events in quadrant C7,823,716429,779
Events in quadrant D3,649,319537,575

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127862
B0137971
C0274631
D0152631

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6170270.437601%
B6170901.458671%
C6170181129.351702%
D61702093.387358%

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 7395 6171 0 0 0.00% 0.00%
B 7395 6171 42 42 0.57% 0.68%
C 7395 6171 1552 1552 20.99% 25.15%
D 7395 6171 159 159 2.15% 2.58%

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 8 15 44396 292.42 735 719 149.4
A 0 226 7736 46.98 735 719 149.4
A 12 194 7315 44.16 735 719 149.4
B 10 16 214493 1527.99 740 725 139.9
B 14 167 95093 674.53 740 725 139.9
B 15 54 19568 134.69 740 725 139.9
C 14 48 5518689 40649.21 588 590 135.7
C 12 4 5385 35.32 588 590 135.7
C 13 61 4708 30.34 588 590 135.7
D 13 235 580997 3394.65 708 686 170.9
D 2 234 181603 1058.31 708 686 170.9
D 13 239 95490 554.58 708 686 170.9

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