ASTROSAT CZTI

Data Quality Report

Orbit 13676

Creation date: 2024-06-27T16:44:23.164449
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/AS1G08_070T01_9000002028_13676cztM0_level2.evt modeM0/AS1G08_070T01_9000002028_13676cztM0_level2_quad_clean.evt
Size (bytes)481,158,720107,631,360
Size458.9 MB 102.6 MB
Events in quadrant A3,322,499706,236
Events in quadrant B3,559,228760,366
Events in quadrant C3,540,387689,049
Events in quadrant D3,701,423643,446

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138993
B0145822
C0144262
D0150692

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6607220.332980%
B6607430.650825%
C6607180.272438%
D6607500.756773%

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 7858 6609 0 0 0.00% 0.00%
B 7858 6609 4 4 0.05% 0.06%
C 7858 6609 0 0 0.00% 0.00%
D 7858 6609 26 26 0.33% 0.39%

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 9 143 24295 136.65 857 840 171.6
A 0 226 7566 39.18 857 840 171.6
A 12 194 6460 32.74 857 840 171.6
B 0 219 83069 508.08 874 860 161.8
B 4 48 22318 132.62 874 860 161.8
B 12 111 17988 105.86 874 860 161.8
C 3 233 255925 1316.84 842 850 193.7
C 13 61 5934 26.25 842 850 193.7
C 14 234 3127 11.76 842 850 193.7
D 8 195 247944 1231.31 829 807 200.7
D 10 157 191182 948.51 829 807 200.7
D 13 249 35805 174.37 829 807 200.7

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