ASTROSAT CZTI

Data Quality Report

Orbit 36914

Creation date: 2024-06-27T21:33:10.783448
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/AS1C07_010T01_9000005246_36914cztM0_level2.evt modeM0/AS1C07_010T01_9000005246_36914cztM0_level2_quad_clean.evt
Size (bytes)310,040,64055,745,280
Size295.7 MB 53.2 MB
Events in quadrant A2,529,129449,390
Events in quadrant B749,4196,957
Events in quadrant C2,642,717452,177
Events in quadrant D3,121,879426,550

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106403
B050332
C0107292
D0126452

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4999120.240048%
B49994999100.000000%
C4999490.980196%
D49991803.600720%

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 9244 5001 3 3 0.03% 0.06%
B 9243 4998 0 0 0.00% 0.00%
C 9244 5001 41 41 0.44% 0.82%
D 9244 5001 162 162 1.75% 3.24%

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 213743 1834.17 579 568 116.2
A 9 143 54850 467.05 579 568 116.2
A 13 6 11861 97.17 579 568 116.2
B 12 243 695601 195261.14 9 9 3.6
B 12 144 12573 3526.87 9 9 3.6
B 5 255 1125 313.27 9 9 3.6
C 15 214 214831 1614.73 574 579 132.7
C 0 10 171571 1288.7 574 579 132.7
C 0 207 18150 132.43 574 579 132.7
D 13 171 396867 2858.31 567 553 138.7
D 10 253 164205 1180.3 567 553 138.7
D 2 153 159228 1144.4 567 553 138.7

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