ASTROSAT CZTI

Data Quality Report

Orbit 24882

Creation date: 2024-06-27T19:10:59.211514
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/AS1A07_027T16_9000003642_24882cztM0_level2.evt modeM0/AS1A07_027T16_9000003642_24882cztM0_level2_quad_clean.evt
Size (bytes)514,388,160115,724,160
Size490.6 MB 110.4 MB
Events in quadrant A3,245,093772,878
Events in quadrant B3,316,222793,327
Events in quadrant C3,943,352764,644
Events in quadrant D4,652,765740,692

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133482
B0136902
C0156272
D0179902

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6209160.257690%
B6209260.418747%
C62092634.235787%
D62092353.784828%

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 7589 6210 0 0 0.00% 0.00%
B 7589 6210 1 1 0.01% 0.02%
C 7589 6210 132 132 1.74% 2.13%
D 7589 6210 168 168 2.21% 2.71%

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 13 254 10156 56.26 840 825 165.9
A 0 226 7210 38.5 840 825 165.9
A 6 16 7161 38.2 840 825 165.9
B 12 111 17695 108.82 835 817 155.1
B 0 229 16924 103.85 835 817 155.1
B 11 111 16119 98.66 835 817 155.1
C 7 247 578403 3040.73 827 836 189.9
C 14 238 132796 694.73 827 836 189.9
C 0 10 5795 26.11 827 836 189.9
D 1 52 672156 3371.7 829 808 199.1
D 8 195 622695 3123.29 829 808 199.1
D 7 238 237424 1188.35 829 808 199.1

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